Friday, October 31, 2025

Certainty Bias Part 2: How Certain Can We Be?

 

 October 31, 2025  

Free Compass Travel photo and picture

Image: Pixabay

 

“We need to take insights more seriously.  Improving performance depends on reducing errors but it also depends on increasing insights.  If we eliminate all errors, we still haven’t generated any new and innovative ideas…. Sure, we need to worry about making bad judgments.  But we also should celebrate our capacity for insights.”                   --Gary Klein, Snapshots of the Mind (2022)

 

“Until you make the unconscious conscious, it will direct your life, and you will call it fate.” 

 -- Carl Jung

                                               

The human brain is a binary thinking system, meaning we think in black and white. Our brains are most alert to contrasts and extremes:  good versus bad, win or lose, like or dislike, on or off, yes or no; the brain thinks in extremes before nuances or ranges. 

“Safe or dangerous?” is the survival question meant to sharpen our instincts and alarm us to flee, freeze, or fight. It is built into our first impressions of people new to us. First impressions guide our immediate behavior, acting as snapshots to trip split-second decisions, not long-term planning.  We overrate small risks and small chances in the quest for total assurance, the basis for the structured (advance) settlement business, which pays out money awards today rather than over the span of years, quickly but at far less their face value (Daniel Kahneman, 2011).  We favor a smaller loss over a much larger gain that also carries the greater loss potential.  The male mind has a higher risk tolerance than the female. 

Epistemic certainty

Epistemic certainty (from study of knowledge, epistemology) is rational and logical, distinguished from psychological certainty, which is subjective—person-based, not provable, and an aspect of belief, not knowledge.  A strong feeling of certainty does not guarantee any truth value, but is highly motivational as an article of identity and perception ability. 

Epistemic facts are core truths so well established—like math principles—that they can’t be challenged until some enterprising thinker ventures outside their sealed box.  Such knowledge is beyond sensory experience, supportable by evidence, justifiable by expert credentials, and is consistent with other truths.  Examples are 2+2 = 4, triangles have three sides, and a doctor’s diagnosis based on test results.  No remote viewing or other classified pseudoscience.

These truths also form an implicit bias, unrecognized because so ingrained, but objective and provable beyond question.  If all knowledge were this agreed-on, conflicts would not come from differing visions of agreed-on truth.  These are the absolutes that provide a sense of security and offer conflict avoidance.  However, the well-guarded secret within professions is that even armed with established facts, judges make different decisions based on a range of factors (is the trial before or after lunch?), as do lawyers, doctors, professors, engineers, appraisers, and religious leaders.

Certainty-seeking

The human bias toward 100%-certain outcomes is a known fact of behavioral psychology. We want things to be absolute, locked and certain, within the past as well as in forecasting the future.  Going for such absolute assurance, however, can prove costly to opportunities and success.

A colleague of mine has mentioned that he would be glad to compete for professional prizes and awards, but with a caveat: as a precondition, he’d need to be assured in advance that he had already won.  (He really said this.)  He then declared that this lack of certainty was the reason he never competed in any available contests.  I remarked that I couldn’t think of many honest contests that operated that way.  There are no guarantees.  Life isn’t designed to work that way.  Uncertainty is the rule—and people try to fight it all the time.

Such is the ultimate state everyone everywhere lives within. And the problem is not that information is scarce or incomplete.  It’s that our perception and processing are biased, and that our biased lenses distort whatever they behold.  We have to get off our own viewing stand to know what we are actually observing.  But this introspective correction is difficult even for experts in decision-making science. 

We are the only species that is all too aware that we are going to die.  That is true certainty;  that no matter how long the lifetime, no one gets out alive.  However, this isn’t a truth that’s easily lived with; the death prospect is profoundly innervating and a major depression pitfall.  How do we deal with this reality?  “Maybe,” in the absence of any certainty about the timing of death, “we should just assume that we’re going to live a long time,” says neurosurgeon Paul Kalanithi.  Maybe acting immortal is the answer to having no answers about mortality—the ultimate extension of the “unskilled and unaware” study showcasing the widespread illusion of overconfidence.

Isn’t the immortality assumption both deluded and uncannily useful to the purposes of living a confident and fulfilled life?  Psychologist Gary Klein’s statement puts this illusion in profile:  “Similarly, I think we need a positive cognitive psychology that appreciates the sources of power people use to make sense of complex and dynamic situations” (2022).

Our need for cognitive closure leads to an illusion of validation and control that so often lands us in trouble of our own, by avoiding losses (we think) but taking unjustified risks driven by emotion rather than reasoning.  Our common need to be certain limits growth, learning, and personal development.  Biasing the brain by needing to be right, we are often led to be wrong.  But this need is systematic and knowable. Our overestimation of our own skills (the Dunning-Kruger effect) can be readily disproven at the first encounter with a more skilled individual or reviewing the corrected math-test answer sheet.  Or by the beginning driver who discovers quickly that he doesn’t have the experience needed to avoid a fender-bender.  Most drivers will swear, however, that their skills are above average.

A useful fiction

But this is a useful fiction.  Overconfidence serves the purpose of providing a reliable illusion of competence, one that allows people to function under the guise that they are more skilled than they are. In the absence of real-time testing, this can work.  This fiction, though, cannot serve its ego-ramping purpose when skill and knowledge are put to work, and where results can be tested, as on the freeway for a driver new to the road.  It is a mental construct, a personal vision that operates as a self-serving device.  One that doesn’t always work that well.  

Add to the issues of unskilled and unaware the unstable nature of our memory of everything.  Vividness is no indication that a memory records actual events, to be taken as evidence of what actually took place, or can act as proof of anything.  Our recollections are a gallery of impressions in a constant state of editing, enhancement, cutting, and re-filming.  Dreams are even more fantastic, but we recognize them as personal visions with weak ties to outer facts.  But then we talk about following our “dreams,” same word,  as a working life plan.

“The standard for decision-making is the courtroom, when it comes to taking people’s liberty, reputation, resources, and even their life, is not ‘certainty.’  It is ‘beyond a reasonable doubt’.  Judges even remind jurors that it is impossible to prove or know anything with total certainty” (Trey Gowdy, Start, Stay, or Leave, The Art of Decision-Making, (2023), p. 58.  “Waiting until you are certain is going to be a long wait.” 

The courtroom scenario is a key case study of testing knowledge and the way we measure that knowledge.  So are other critical life events: choosing a career, a college, a living location, even a car, and especially a significant other.  All are big-ticket choices with long-term consequences, and each requires weighting knowledge to decide which data points are the most relevant to the decision.  But remember that the main driver of decision-making (the more important the decision, the more powerful the drive) is the whole brain, which operates on emotional affect.  Rational thought is just an irregular subset. Art, not science, rules the mind. 

 

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