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TRUTH-2020

The Truth about Truth – 2020

G. Donald Allen

 December 31, 2020


 

Truth does not become more true by virtue of the fact that the entire world agrees with it, nor less so even if the whole world disagrees with it.[1]

MAIMONIDES


NOTE. This report has been updated, with additional explanation of quasi-truth. 

See, this update at this link.   


 What is Truth has to be one of the big questions of life? Look it up.  Use Google or consult any of the countless volumes on truth.  Truth is one of the biggest subjects in all of philosophy, religion, the law, and science.  It is one of the most important words in any language one can apply to a given statement.  The word “truth”  confers understanding, authority, and consensus.  Truth is a power word; probably none are stronger.  Get a colleague to agree with your truth, not the logic or righteousness of your case, and you have a follower. It is the word.  This implies its meaning must be addressed.

It is used by all instructors, clergymen, politicians, and your friends - all the time. “It’s the truth, I swear,” is an expression known to all, and used by most.  All promote their views or truths. Hard discussions allow us to understand this, and not be so easily swept up into the truths of others, and not to be conflicted by moronic conversations about truth vs belief. As well, truth can be fleeting. It is everyone’s unrequited lover. Rejected the next day. Forgotten the next week.

You can find dozens of variations and philosophies of truth.  It implies an elusiveness of definition as it varies according to situations.  So many shadings exist, it is unlikely a universal definition will ever obtain.   The notion of truth is relative, needing a context and categories in which it holds.   Indeed, most of the categories below imply types of restricted theories of truth.  Such truths have a restricted validity whether to a social, geographical, political, religious setting, or others.   On the other hand, most truths are restricted in some way, including through coherence, correspondence, pragmatism, or others.  The opposite type, unrestricted, implies a universality or absoluteness.  Many are the truths of an individual or group sandbox, but few are the truths for the entire schoolyard.

We may say that if a truth is a proposition with the perception that “it is so,” there are different types.  All of these co-mingle, making any sort of consistent and coherent, much less universal, definition nearly impossible.   Moreover, if you begin with the proposition, "If there is no absolute truth, there is no truth whatever," you will come away greatly disappointed.  

The subject of truth intertwines with the theories of knowledge, reality, and beliefs in subtle ways, so much so that it becomes very difficult to separate them – as the following paragraphs suggest. An interesting question is whether truths are invented or discovered.

The concept of truth is somewhat based on the bivalence of knowledge.  A statement or proposition is either true or false – the law of the excluded middle. However, philosopher-logicians and mathematicians have been busy, giving us multiple logics, some deprecating the excluded middle, and giving us the powerful notion of undecidability.  The latter tells us some truths can never be proved using standard logic. In the types of truth section below, we see that humanity has informally or implicitly anticipated undecidability with variations of truth applicable only to special circumstances.

The expression, “This is true for thee but not for me,” should not be unsurprising nowadays. Skip ahead to Types of Truth section if your preference is to review the vagaries and faults of the truth concept. Almost certainly, one of the types will fit within your wheelhouse of importance.

Theories of Truth

The big three in the philosophy of truth are the correspondence, coherence, and pragmatic theories, with the semantic (language issues) and deflationary (maybe “truth” is not needed)  theories held in abeyance.  We have added a few corollaries to these, and as well a legal theory of truth, being such a flawed human system with vague rules and so very much open to interpretation.  Yet, it comes without the emotional baggage of other types of truth. The legal theory of truth is essentially a fully-closed, strongly human system, with logic mixed with the full panoply of human emotions.  In practice, it comes with an ultimate arbiter. The legal theory is my personal favorite. At least, I understand it.

A.      Correspondence Theory of Truth.   Here the correspondence is to reality.  A proposition, such as “It is sunny outside” becomes true if it is subsequently verified that indeed it is sunny.  This is one of the strongest forms of truth, and essentially irrefutable unless one wishes to delve into the very meaning of reality.   Propositions true within this theory often have a limited scope as they pertain to the phenomena of observable reality.   Nonetheless, the matter of inference is also connected with observable reality.  No one has actually seen a quark (i.e. observed one), yet there is inferential proof they are there. We are guided here by the statement by twelfth-century philosopher and theologian Saint Thomas Aquinas,Veritas est adequatio rei et intellectus[2],”  meaning “Truth is the adequation of things and intellect.” Here, the word “adequation” can be read as “equivalence,” or “commensurability.”

B.      Coherence Theory of Truth. In any system in which you live or entertain, there may be some items that are considered within the system as true.  For a proposition to be true by coherence it is necessary that it not contradict or be contradicted by the other truths.  This basically implies internal consistency.  It “fits” within the system, perhaps logically.  However, given a body of truths, it is relatively routine to construct a proposition that satisfies these necessity and sufficiency criteria, yet would not be regarded as true.  For example, consider the truths accepted by any body of knowledge.  If we say, “The elves that live on the one hundredth nearest planet from Earth are purple,” this proposition clearly doesn’t contradict anything, but few may accept it as true. 

a.       Transitive Theory of Truth. There is a variation of coherence theory which involves with multiple sets of truths within the domain of various neighboring spaces.  A proposition in one space is considered true if it is also true within the transition zones of neighboring spaces.  This is essentially the idea of new physical M-theory, where the neighboring zones are defined by the scales of magnitude.   For example, in physics there are various truths within the atomic scale not apparent or even relevant at the macroscopic level, but many are when the atomic scale widens.   A specific example is the double slit experiment (http://en.wikipedia.org/wiki/Double-slit_experiment)  which indicated interference at the photonic level but is utterly unsupported even at the cellular scale. There is current evidence that interference has been observed at the molecular level.  Transitive theories of truth are most suitable to hierarchical systems.   In this there is some connection notion of absoluteness in mathematical logic, but for the fact that for this model theory a truth must be true within all structures. (http://en.wikipedia.org/wiki/Absoluteness)  We are requiring agreement only in the zones of transition.

C.       Pragmatic Theory of Truth. This theory states that a proposition is true if it is (1) believed, and (2) useful.  Pragmatic truths are usually limited to individuals, but can also be applied to whole societies.   The individual may believe, “It is important to study hard,” and so orders personal activities.   Another individual may have no such belief and may in fact observe something quite different.  The society may believe “Obeying the statutes is important,” and so orders its activities in concordance with this truth. This makes notions of anarchy so visible – and feared. Also, a society can believe that “We must land upon the moon.”  Or “We must construct an interstate highway system.”  And some, but not all, societies have done so and acted upon them.   Importance, therefore, is not a factor.  

a.       Consensus Theory of Truth.  This variation of pragmatic theory allows a truth of a proposition to be formed if all or most all agree it is true.  The basis of village superstitions falls among these.  None can be established by any other means.   Religious sects have a similar body of truths.  Rituals are similar.   As well, science has enjoyed many such truths over the millennia.  Consider for example, the theories of phlogiston or the validity of bloodletting.  Both were once solid scientific truths. Astrology has furnished a large set of truths, although varying between practitioners.  As a subject, it is still followed widely and believed by millions – even by educated persons. The maxim of Maimonides speaks against consensus, implying truth is not an aspect of a plurality of assent.

b.       Social Theory of Truth.  These truths are pragmatic, though not always, and are somewhat similar to consensus-type truths.  They usually pertain to a particular social setting.  They might be propositions about customs, rites, planting, hunting, dressing, courting, housing, and most everything pertaining to living and social relations.  Social truths, some of which may be quite unpopular, maintain societal stability.  Entire civilizations, tribes, fraternities, or simply clubs have social truths.   Currently, in the USA and Europe, we see efforts toward the deconstruction of many social truths.  These may or may not have destabilizing effects. The notions of post-modernism seem to allow social truths, which co-mingle logical with emotional reasoning, to contribute to what may be the actual truth. 

D.      Semantic  Theory of Truth.  This theory of truth involves the language used to make the proposition.  It involves tautological implications, contingency, and several other linguistic artifacts.  It deals with the issues of some propositions having no truth or falsity, and those which cannot be decided at all.  The semantic theory is also concerned with the nature of the language and the types of statements allowed within it. The questions and issues are complex.  (See, https://iep.utm.edu/s-truth/#H4.) One of the original goals of semantic theories was to eliminate paradoxes caused by self-reference.  Example: This sentence is false.  You see, if it is true then it is false. If it is false, then it is true.   Hundreds of similar paradoxes obtain. Alfred Tarski (1902-1983), who originated the rather complicated semantic theory, required another, secondary or dual, language toward this end. 

E.       Legal Theory of Truth.  Currently under development for the past four millennia in many societies, there is a corpus of statutes, constitutions, case law, and the like that has a truth value for the society. Dating from antiquity, these include contract, constitutional, probate, criminal, and property laws (i.e. the truths).  Partly owing to their legal complexities and vagueness, different legal scholars and lawyers may give (assign) different truth values to particular situations. Typically, the prosecutor argues the accused have violated some law while the defense argues this is not so. Then the judge or jury decides. Authority plus plurality at work.  In consequence, most societies have an entire legal system to adjudicate and interpret any given situation based on this corpus.   Naturally, with an appeals process, there becomes an element of coherence and correspondence theories within the system.  In most of these systems, there is a supreme decision-making body, in whose decisions there is a general consensus to abide.   Such a system is clearly pragmatic, though exotically complex, horribly convoluted, and with tones of correspondence.  

Precursors to legal truths are principles and commandments. You can live by principles, such as “Love thy neighbor,” or “Theory A works every time.” Principles lead to laws, virtually the axioms in every type of endeavor. You can also live by commandments, such as “Thou shall not kill.” As well, you can live by maxims, aphorisms, and sayings, all speaking of truth, while resonating within us in some natural sense on board at birth, as it were. It is always best to understand the differences between these and actual truth.

The legal theory of truth is a most excellent example of a truth theory. It illustrates what happens when very serious, intelligent, and well-intended thinkers gather together to form a workable framework for deciding the true from the false in our totally human environment, all in a logical, consistent, and coherent manner. It shows wisdom in allowing an ultimate decision-making body – flawed as it may be. It even allows the resolution of contradictions and paradoxes. For example, an alert judge may dismiss outright a paradoxical argument as inadmissible. One dangerous happenstance occurs when a legal theory becomes influenced or corrupted by politics.

Combination Theories.  When a given truth is both coherent and correspondent, it is stronger.   And if also it is pragmatic, it becomes stronger still.  Hence, it is of some value to study such combinations from at least a philosophical viewpoint.  This leads to levels of truth, for example with probable truths (see below).  It is curious whether a single truth can be contradictory as to having memberships in two different theories or types (below)!  Philosophers have battled with the concept of truth for centuries, showing all the tricky twists and turns of the topic. Indeed, the fact that many theories compete even today, leads us to truly pragmatic versions or definitions of the truth, those of type. For most types, however, coherence is important. We live, it seems, in a world with different truths for differing aspects of living. 

Truth, therefore, is something like a quilt, whose patches we seamlessly traverse
with little worry of transcendent inconsistencies.

Type of truths

Many types of truths persist even though they are unsupported by any particular theory per se; they exist and form the great guideposts in normal human behavior in social systems, science, business, engineering, and even in philosophical discourse.  On the other hand, many types of truth are perversions of the ideal of genuine truth achieved by changing logic, confusing criteria, delimiting details or facts, or otherwise convoluting common sense.

The progression of and then toward truth should not be surprising. Occasionally, a truth emerges in the mind, fully formed and ready to serve. More often and beginning with a mere mental glimmer or an insight, a truth develops by adding some evidence, facts, or feelings toward becoming an idea or concept.  Its formation requires craftsmanship and polish to eventually survive.  It proceeds toward acceptance and then adherence coming to belief,  clear articulation, and entanglement with others, and finally becomes a truth. Through such a maturing process, the truth generates a pedigree. Most simply do not pop out of the factory.  Finally,  many truths have something like a half-life eventually becoming a pseudo-truth. These are covered below.

In our extensive list of more than two dozen types of truth, some types overlap. Yet, each has its particular position in the full gallery.

Absolute truth.  The most elusive of truths, defying even definition, yet always the goal, are absolute truths.  An absolute truth is something true everywhere and anytime. No circle is a square.  The absolute truth is discovered, not invented.  It can be derived, but not created.   A possible conjecture is an absolute truth when adhering to coherence, correspondence, and pragmatism. But even this will not do. Many clerics (e.g. Martin Luther) argue that truths not absolute are not truths at all. However, there is little apparatus available except our inner senses that can make such a decision. Consider the axiom, formerly an absolute truth, that two lines are parallel if when extended indefinitely do not meet. Yet, the term “extended indefinitely” is not operational in the sense it cannot be done.  Formerly an absolute truth, the parallel lines axiom, if denied, allows the rather useful concept of non-Euclidean geometry.

 In the modal theory of logic, there has been defined as a type of absolutism, the view that facts are absolute rather than relative. Absolute truths are often, if not always, about facts. In the past, the statement that “God is good” was an absolute truth. No longer. Such have fallen from favor in our modern age as almost everything is subject to charges of relativism or even outright denial.

Empirical truth. Empirical evidence is information received through the senses, particularly by observation and documentation of patterns and behavior through experimentation. The term comes from the Greek word for experience, ἐμπειρία (empeiría). Empirical truths are among our most reliable.

Empirical truth is precise with conformity as learned by observation or experiment between judgments or propositions and externally existent things in their actual status and relations — called also a posteriori, actual truth, and contingent truth. For comparison, we have rational truth known prior to evidentiary confirmation – also called a priori truth. A classic example is the electromagnetic theory developed by James Clerk Maxwell, who tried so hard to give it an empirical or at least an analogical flavor. Eventually, he gave up in favor of pure mathematics.  It took decades to understand, and our entire electronic world lives by his fundamental set of equations, quantum applications excluded. Another turned out poorly. In medieval times it was a truth that a vacuum was rationally absurd and hence one couldn't exist. This truth has been disproved. 

Emerging truth.   These are “truths” purported that at their proposal are neither coherent nor correspond with extant truths, but have a compelling nature and give an alternative interpretation or explanation to extant information.  An important geological example is plate tectonics.  In the beginning, it was rejected, but now it is accepted as though “how could it be any other way?” “Vaccines work,” is a truth few deny today, but it took decades to emerge, following the work of Pasteur. Similarly, at the beginning of the 20th century, quantum theory was rejected by many physicists.  Yet the new breed of physicists persisted, showing how classical and quantum physics intertwined, how quantum physics explained many problems non-resolvable or incorrectly resolved by classical theories.  This theory and its body of truths emerged and became both coherent and corresponding. By the way, both quantum and classical theories now have a happy coexistence, both used effectively within their scales of consideration, quantum for the atomic scale and classical for the macro scale.  Though not discussed here, the notion of scale is important in many types of truth.  For example, sociologists often use the interaction between actors (people) to generalize interactions between groups, and this can lead to serious problems.

False truth. All too often, false truths occur owing to invalid or false assumptions but are regarded as valid and true.  For example, interviewing candidates for some positions, the interviewer makes assumptions that the candidate having qualities such as height and deep voice will become an excellent leader. This presumption is called false truth.  With a more political tone, it seems many believe by repeating a narrative over and over again, it becomes a truth.  The basis of “re-education” camps is nothing less than false truths imposed until believed. When any false narrative tunnels into your belief system, you may accept false truths.  False truths are similar to quasi- and pseudo-truths.

Many of us use false assumptions leading to false truths daily. College recruiters make lasting mistakes owing to (personal and corporate) false truths. Your boss makes false assumptions about staff competencies and makes promotions incorrectly.

Presumed validity of assumptions fall partly under the aegis of political truths when politics are involved, but also under underlying other assumptions of an interviewer in business situations. Such truths also apply to religious heresy where a cleric purports some propositional violation contravening church law. Other examples naturally conflate with legal truth, which of course is "defined" with a measure of consensus. False truth is often logical truth derived from false assumptions. How many leaders have used false truths to take actions that have led to disaster?  Many Chinese books on leadership highlight these as examples for study for prospective leaders. Read Michael Pillsbury’s The Hundred-Year Marathon: China's Secret Strategy to Replace America as the Global Superpower.

Emotional truth.  Here we are convening directly upon a proposition combined with a belief, a proposition that partly makes its case upon striking an emotion with the reader.  These are numerous, probably one for every emotion, traumas included.  See the examples below, which most of us have used. 

a)       A convenient/inconvenient truth is … .

b)      The sad/happy truth is … .

c)       The naked truth is … .

d)      The hard truth is … .

Demagoguery is no stranger to this select list. Accepting an emotional truth is but a step preceding to changing one’s beliefs.

Human truth.  Such truths are unique to humans because they are so human, some in aesthetics, some in morality, some in psychology.   Example: “Humans are the only thinking and self-reflective species.”   As one author has observed, “Many things that we consider to be inherently true probably reflect distinctive features of human psychology.” For instance, because human beings are primates that readily establish and acknowledge dominance hierarchies, the human individual may be predisposed to feel that there is or could be some entity ‘greater than me.’” See mammalian truths below.

Mathematical Truth.  This is a logical proof, usually based on axioms, postulates, and other proofs, from Aristotelian logic but often using other logics (yes plural), particularly about sets.  Zermelo-Fraenkel logic is one example.  The list of axioms has grown. Much of mathematics follows the program: Define some axioms and objects. Develop theorems relating the objects to be proved logically from them. Of course, there are many applied or physical problems that create the scene, which then mathematicians develop. Scientifically, there had been no discipline so richly developed by this paradigm. But can everything be proved.  Well, no, there are many open problems – those unsolved by anyone yet. There are even undecidable propositions, most important for advocates of a complete theory. In brief, a proposition is undecidable if it can be proved not to be provable within the given logical system.  Even more confusing are self-referential propositions, statements, and questions, which are sources for many paradoxes.

Scientific Truth.  Based on facts and good empirical practices, scientific truths are derived without the benefits of emotion, religion, or politics.  Also, there are prescribed methods for truth discovery, the scientific method, omitted in this edition.  Let us just say, scientific truths are achieved carefully and are always subject to review. Always new scientific truths are greeted with skepticism, scorn, and doubt. Many are simply wrong.  Consider that false Ptolemaic astronomy persisted for thousands of years before by Sir Isaac Newton (1643-1987) deduced a correct, verifiable theory from which predictions became routine. But now, Newton’s elegant theory is under attack from the relativistic upstarts, like Albert Einstein (1875-1955).


As long as logic, instruments, even facts, and rigor are in flux,
there can be no closed science.


That all science must be reproducible, verifiable, and observable forms the foundation of scientific truth.  However, there is some science, emerging science, that doesn’t meet these stringent requirements. For example, the standard model of modern physics has components that haven’t been fully confirmed. There are competitor theories. That is the way science proceeds.  The demands of rigor and correctness are always on the table for changes or elimination. Even now, the nature of the science of gravity is changing with some regularity. Scientific truth is the lingua franca the softer sciences seek to emulate but all too often come up short.

Mammalian Truth. To better understand this idea, consider the concept of mammalian truth, a truth that applying to all mammals – because they are mammals.  One example is, “It is dangerous to stare at the sun.”  Another is “Avoid prolonged exposure to extreme temperature conditions.” This is but one of countless specific truths applying to segments of every category.

Personal truth.  These are truths valid only for the individual.  “For me, Fords are the very best cars on the market today” is an example.  Personal truths reflect the physiological, psychological, experiential, and environmental qualities of the individual.   For many, religious beliefs furnish a large supply of personal truths. Lutherans, Catholics, Muslims, and even Atheists are included. Personal truths, particularly of a spiritual nature, tend to be secret to their holder. See Religious truth below.

Practical truth.  (similar to pragmatic truth) – a proposition that when regarded as true leads to a successful outcome.  A practical truth may describe a method for fishing, that while pragmatic, is likely to lead to a successful outcome.    The early settlers at Jamestown were particularly pragmatic about survival but had no practical truths for fishing during the winter season. 

Prayerful truth.  This is a truth obtained by using prayer or pseudo-prayer to discover what is the nature of the exigency under review. I pray and my prayer revealed to me this is the truth.  It is used by religious folks as well as politicians desiring you to favor them.  Of course, it is related to emotional truth but casts a spiritual light upon said revelations. It lends gravitas to a situation when so invoked. It could also be termed revealed truth or spiritual truth, as its origin seems to be higher spiritual enlightenment. God is implied in some applications, generic spirituality in others. The notion of “spiritual” must be clarified, of course. However, this definition seems to work with most of them.

Political truth.  A proposition, usually in politics, for which there is no supportable evidence, but one that could be true.   It just isn’t but its supporters are often successful in convincing others of its truth.  Demagoguery is a also close relative of this type of truth.   Another type of political truth involves a governing body simply to declare some proposition to be true; no further examination is required, wanted, and in fact, must be discouraged.  For example, the Indiana legislature some many decades ago voted that pi should be 3, not the value 3.14159… it is.  Stalin decreed the Lysenko rejection of Mendelian genetics in favor of the theories of the inheritability of acquired characteristics to be true.  Currently, the current climatic changes so very much studied are the results of anthropogenic causes that have been declared true – the science closed.   Governments traditionally endorse political truths owing to the power and simplicity the word “truth” confers upon any proposition.

Relative truth.  A proposition that is true relative to a given situation or circumstances.   It may not be considered true in other geometries, times, or settings.   It can be a useful truth for a given period or situation, thus making it possibly pragmatic.  One could argue that most “working” truths of one era are posited (and proved) relative to the given knowledge base, ethics, morality, and values of the time.  The relative truth should fit within any of the given theories or categories.  Compare with contingent truth (below).

Selected truth.  When a particular situation arises, a particular reporting agency may honestly report within the correspondence theory certain facts of the situation but ignore other facts that mitigate or negate the actual or factual truth.   The reporting press is particularly prone to reporting selected truths, the goal being to establish as true events or “facts” with another agenda in mind.   Concomitant with selected truths are so-called partial truths and half-truths, both of which imply relating correctly some but not all of the facts pertaining to the situation at hand.  Demagoguery is an associate of this type of truth. Children often engage their parents with selected truths in their desire to warrant some object of desire.  Selected truths form perhaps the greatest perversions and distortions of truth. They border on the downright lie. 

Temporal truth.  Many truths of one decade or generation must be rescinded and discarded for the realities of a new set of circumstances.  This theory can fall under the aegis of any of the above theories.  Facts may change, inconsistencies may arise, and the pragmatism of one age may alter.   History has shown us that much of science has enjoyed temporal truths. Astronomy endured centuries of temporal truths before Isaac Newton set it on a rigorous, sustainable, mathematical foundation. Even now Newton’s theory has given way to relativity and the quantum realm. As well, blood-letting, fatal to George Washington, was the latest truth on curing disease – not that long ago.    Hence temporal truths are relative.

Universal truth.  Certain propositions cannot be denied by anyone under any circumstance.  Examples.   “The sun supplies the light and heat that sustains the earth’s life forms.”  “The circumference of a circle divided by its diameter is the constant pi.”  The second could be suspect if we found ourselves living in a non-Euclidean geometry – which in fact may be the case in other parts of the Universe.   But for now, these and other propositions come as close to absolute truth as we have.    Universal truths are generally coherent and correspondent.   In many cases, our repository of universal truths rests with science and mathematics.   However, while the universal truth of a proposition may be incontrovertible from a logical perspective, the premises upon which it was derived are often the objects of criticism.  Compare with necessary truths in the section on contingent truths.

Negotiated truth. A new type of truth constructed from former truths owing to changing conditions and varied opinions is now on board. It is used to uncover and handle trauma, wherein the patients may not be able to relate an incident as a life narrative.  It is bringing to concordance or at least to understand the interplay between emotions and truth production.  Basically, it is an application of emotions to give meanings and then to refer to the meaning and further truth itself.  For instance, one application would be to apply the idea to “things we consider obvious” and therefore do not require supporting evidence. Negotiated truth is similar to emotional truth.  Used in political reporting, it permits making claims without the burden of fact-checking but with reliance on emotional clarity.

Extensional truth.  The notion that truth is conferred by a plurality of people believing or accepting it. Alternatively, a small strong, and vocal group may suffice. It is used substantially as a weak argument for attaining something, typically with the predicate, “Everyone has/does/thinks this …, and therefore… .” Despite the advice of Maimonides, this type of truth is most important in social life, including politics. Indeed, it is a basis for making preference polls, not just to determine information but to convince. In another way, it is the basis of voting. Extensional truths, passionately expressed, also form the basis of political movements.

Experiential truth. Different than logical, related to outcomes, we find another variation of the truth verified by experience. Example: You verify the fire burns flesh by thrusting your hand into the fire.  Before that, it was the truth by declaration, concept, or theory. Experiential truth is personal and has great strength, often greater than logical truth. If one believes he or she has been visited by a ghost, an experiential truth, there is little logic can do to override this. In sum, consider the conflicting statements, “Science says there are no ghosts” and “I saw a ghost.”  Compare with personal truths of which the experiential type is a specific form.

Religious Truth. Religion is a collection of beliefs connected with specific notions regarding the spiritual aspects of humans or extensible to all intelligent life. It posits tenets about God, who exists, but differences apply.  The tenets and stories are usually contained in a Holy book, or through oral transmission. It tends to organize, more in proportion to its competitors such as agnosticism and atheism. The organization lends itself to scripture and volumes of rules. Almost all religious truths are sustained by beliefs. However, many many seek physical manifestations such as revelations or miracles. These amplify and intensify individual commitment to religious truth. Most religious truths are extensional by nature, thus depending on a group of similar believers. Some religions have room for science, the law, teaching, and in fact seem to engage a whole universe – with specific incontrovertible rules demanded.

Undecidable truth. Into the range of impossible problems where no methods apply, some decisions are partly practical, partly logical, and partly best guess.  This also happens when so many facts are associated with the truth, it becomes impossible to reconcile a particular statement. Thus, we generate undecidable truths. They are closely related to the so-called wicked problems. Example. What is the best way to build a bypass around the city? Please note that many of the ideas of truth and solutions intertwine. Many paradoxes are similarly undecidable, and this drives us away from bivalence in our many logics. In mathematics, there are true statements that cannot be proved true (Gödel’s work). See Mathematical truth.

Reproducible Truth.  Similar to scientific truth, a reproducible truth is a verifiable truth expressed in a manner that can be concluded or verified by the method prescribed.  It does not require the method has been validated or verified. When a truth is posited on some basis, the question arises about whether this truth can be verified by other observers using the same methods and axioms.  If it can in a consistent manner, then the truth is reproducible. It could be a legal decision. It could have a religious nature. For example, suppose a person has been affirmed by an ecclesiastical committee to merit the rank of sainthood, then a second committee using the same methods must confirm the finding. This does not imply the existence of saints or criteria for saints be accepted other than the body designating the rank. On the other hand, suppose some chemist evaluates the specific heat of some molecule to be some value. Then all other chemists should also make the same evaluation applying the same methods. This type of reproducible truth carries more weight when such methods have been validated by all.  What about the age of the earth? The age we accept now is far different from the assortment of methods offered, some even by distinguished scientists.  Here we see the scientific method under evolution as to how or what methods have the greater merit. Truths evolve, we know, but so does methodology.

Post-Truth.  When circumstances allow a lower reliance on objective factions in favor of more reliance on emotions or personal beliefs, we call this post-truth.  This notion has emerged in recent years. It allows those without specific knowledge to venture their ideas based on other factors such as emotion, religion, and politics. This is a risky form of truth, mixing fact and fiction with a “truth” imprimatur attached. It equivocates reality and fantasy. We see this currently with various business and school shut-downs owing to COVID-19. A common situation wherein post-truth is invoked is in times of crisis, where the facts, science, and tradition are insufficient to make clear choices or solve problems.

Textbook truth. This is the kind of truth you learn in college, mostly in liberal arts courses. The author argues some viewpoint, using evidentiary facts (that you don’t know), and very smooth, subtle, and seductive language.  The result is that you come away to believe some positions you scarcely understand to be true. It has been used for centuries to sway readers to believe in some course of action. If you don’t understand the premises or even know what they are, and you accept the conclusions, you become the victim of this form of convincing. Hard science textbooks are generally immune as facts given are generally established in the laboratory.  This type of truth also applies to various school curricula. One example is the 1619 Project, whose basis seems to be with a modernistic political explanation of history.

Legal truth. Such truths are those which are derived from case law, statutes, and settled law, but modified by representatives of the law, the judges. Mostly, the arguments are logical and deductive but mixed with measures of common sense, and the vague concept of justice. The legal code forms the axioms of legal systems. The Hammurabi[3] code of laws was a collection of 282 rules to regulate the foundations of commercial and personal justice. These were declared true by fiat – a regal truth. See the Legal Theory of truth, above.

Quasi-truth.  (taken after quasi-memory*). The quasi-truth is a truth the listener believes but did not conclude, verify, or validate. Similar to a belief, the quasi-truth is a proposition that someone accepts if and only if it is believed or accepted by someone else also with little or no justification.  Sometimes they take on the cloak of an aphorism such as “When the wind is from the East, the fish bite the least; when the wind is from the west the fish bite the best.” Or, “Red sky in the morning, sailor take warning.” Quasi truths are among the weakest logically but have large followings within the population.

*S. Shoemaker, Persons and their Past, American Philosophical Quarterly, 1970.

Pseudo-truth.  Akin to pseudoscience, a pseudo-truth is a proposition that people believe without sustained validation and even in the presence of falsification.  Indeed, falsification often serves as further justification. The old adage, “the exception proves the rule” is well worked here. Pseudo-truths include many more specific types of truth already discussed. Of the objections, there are concepts of unwarrantable versus untestable.  The latter is often excused and the former subsumed as insignificant.  Some pseudo-truths can be derived from a false doctrine such as in conclusions from scripture, which themselves are often of dubious origin. Mathematically, if we set several errant axioms, and concluded theorems from them, we could generate pseudo-truths in quantity. Indeed, non-Euclidean geometry was derived in this way, and to some extent, it could be considered a branch of pseudo mathematics – as many others have been. But this one works in many, many applications including general relativity. Such outcomes often justify other applications.

Contingent truth. A contingent truth is a true proposition that could have been false. Example: Stop signs are circular. As we know stop signs can be circular, but often they are octagonal.  Similarly, John married Jane on Saturday is contingent, because for a variety of reasons the marriage may not have taken place. Similarly, a contingent falsehood is a false proposition that could have been true. This is sometimes expressed by saying that a contingent proposition is one that is true in some possible worlds and not in others. This should be compared with the concept of necessary truth (e.g. one plus one equals two), which must be true in all worlds, at all times. Thus, a necessary truth is one that could not have been otherwise. Political truths as discussed above are similar to those conditional, but more precisely they can be fictional made to sound or ring true. The difference is between “could” and “should.” Notions of contingency are important in any discourse where alternatives are possible. Most planning is done with contingencies built-in.

Probable Truth.  Probable truth is based on the notions of explanation.  And the explanation method we have in mind here is abduction, as follows.

Abduction idea

Given evidence E and candidate explanations H1, …, Hn of E, infer the truth of that Hi which best explains E. aka - Best guess!

Thus, we cannot say that the inference Hi is absolutely true, even in the sense of the discussion area. Many warrant this inference should be called the probable truth of the best explanation, others that it warrants an inference only as the approximate truth of the best explanation, and still others that it warrants an inference only as the probable approximate truth. You may have experienced creating a probable truth when in the study of some issue at hand, your mind suddenly leaps to a conclusion or truth.  That “Ah-ha” moment.  You may know it is not precisely true, but it is the best you can do and seems to fit the situation. All of us entertain probable truths more often than we realize. Abduction, a cousin of deduction and induction, is no stranger to scientists, as it often helps form the foundation of new ideas and theories. During an epidemic or war, it is apparent that medical experts and generals leap from explanation to explanation as the event progresses.  At no time has any truth or correct explanation been discovered. Viewed as such, even the word “approximate” is a stretch. 

Is it ironic that physical truths, once the iron clad messengers of physical truth, through the lens of quantum theories, have become probabilistic, and now the notion of truths themselves have a probabilistic aura?

Concluding remarks. If you’ve read this far, you are thoroughly saturated with notions of truth. You know when some swears it’s the truth, you can believe them, but still not know what type of truth is applied. Yet, you are curious and now possibly doubtful about whether any truth beyond the tautological is possible. We mostly try to be truthful while understanding the many variations of truth we use.  We find even the lie is needed at times.  Nonetheless, we all want the truth. We crave the truth. We believe in truth. It’s just hard to find -  maybe impossible.

Indeed, when confronted with nearly thirty varieties of truth, each competing for space and each abundantly used, one is led to question whether a unified measure of truth is even possible. Perhaps “truth” should be abandoned, as has been suggested.  But no.  Just the sheer number of varieties suggests the great importance of the concept even though the field of candidates is vast.   

The first part of this essay is about how scholars think about truth, while the second part shows how we use the concept. It is suggested applied philosophers turn their attention upon the exigencies of how the term is used. Pure theory is not enough.

This has been a difficult conversation about truth. Yet having such conversations about an important topic are worthwhile. For me, it was the recognition of the ephemeral and tricky nature of truth. It helps me understand how different people can propose opposite views, each believing they have spoken the truth. From our beginnings, truth has been posited to us as the last word on a subject, the finality we must accept. Finality is the keyword. As best, it is the end of the journey. At worst, it is used to silence further discussion.  

A singular missing form of truth is the notion of future truth, or just plain predictions.  Sometimes based on solid, time-tested  science, and other times merely educated guesses, and now centuries after Newton’s grand success, many predictions are based on “models,” statistical or mathematical.  They lend gravitas, but just having a formula does not imply anything about its correctness. Future truth is the playground of futurists (this will happen), clerics (heaven or hell), prophets (note Cassandra and Nostradamus), and politicians (we will protect you if …). It is used by the body politic toward hopes that conditions will improve. As well, meteorologists serve but one purpose, the prediction (future) of weather. Many predictions fail notoriously, such as the time and location of the next earthquake. The acceptance of future truths combines desires, beliefs, hopes, and authority. Concomitant with future truth is the future of truth, as affected by our universe conjoining with the new digital universe.

Much of what has been said is covered by Danish philosopher and theologian Søren Kierkegaard (1814-1855) with,

There are two ways to be fooled. One is to believe what isn't true; the other is to refuse to believe what is true.

To Teachers.  I believe that every student everywhere should be asked to write an essay or theme on the truth. Just a little research will open their eyes, but the topic’s details will reveal how deceptive the concept can be. Yet, achieving a measure of truth in their lives should always be their watchword, guidepost, and goal.

References

a)       http://plato.stanford.edu/entries/truth/

b)      http://evolvingmind.info/blog/four-types-of-truth/, by Andrew Bernardin

c)       http://www.galilean-library.org/site/index.php/page/index.html/_/essays/introducingphilosophy/10-truth-r26  by Paul Newall.

d)      http://www.toktalk.net/2008/11/09/three-different-types-of-truth/  by Oliver Kim

e)       Newton C. A. da Costa and Steven French, Science and Partial Truth: A Unitary Approach to Models and Scientific Reasoning, 2003, Print ISBN-13: 9780195156515, Published to Oxford Scholarship Online: February 2006, DOI: 10.1093/019515651X.001.0001

 

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Final Note.  We are already at work on next year’s edition of The Truth about Truth - 2021.  You may have noticed we have never discussed just what truth is.  Namely, is it a process, object, concept, property, attribute, state, or sense? Is it measurable? A remarkably thorny question, answers have been proposed by many philosophers.  On the next update, we’ll take a closer look, always on the objective side.

 



[1] A medieval maxim. Moses Maimonides (1135—1204).

[3] Dated from 1734 BC.


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