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"The greatest threat to humanity is not evil, but stupidity." — Yuval N. Harari, Nexus

"Two things are infinite: the universe and human stupidity." — Albert Einstein

"Stupids, fools, and fanatics possess unwavering certainty; wisdom, in contrast, fosters doubt, allowing both beliefs and knowledge to adapt and evolve." — Me, Socrates, Bertrand Rusell, Dunnings, Kruger and anyone else with some common sense.


Stupidity is the primary cause of prejudice, hatred, denial of reality, superstition, environmental destruction, injustice, intolerance, and most other afflictions that impoverish humanity.

Stupidity may well be the most destructive force of humankind. It is arguably the most pervasive and significant factor in how humans harm others, the environment, and themselves.

A-M-A-Z-I-N-G-L-Y, no one is denouncing the obvious: stupidity is a terrible scourge, and it must be stopped or defused. While it may seem 'politically incorrect' to address stupidity directly, its effects are too damaging to ignore.

Whether in personal decisions, public discourse, or institutional policies, unchecked stupidity leads to wasted resources, unnecessary conflicts, missed opportunities for progress, painful prejudice, and even massive hatred and crime. It’s not enough to simply lament its existence—we need to develop neutralizing measures.

It seems as if neutralizing stupidity is nearly impossible; it is unassailable. It stubbornly resists arguments, leaving no weapons to combat it. Nothing can defeat stupidity. It won’t listen. Contra stultitiam inermes ("Against stupidity, we are defenseless"). By its very nature, stupidity resists reason. Unlike a tumor, it could not be determined, located or extracted. The 'cancer' of stupidity could only "suspected"—until now.

Given these facts, there could be no greater priority in this day and age than identifying and measuring stupidity—if at all possible—both in others and within ourselves, as chances are we are all infected by it to some degree (not you, of course).

But how can we manage stupidity? As Peter Drucker famously said, "You cannot manage what you cannot measure." So, the question arises: Can we detect and measure stupidity?

Measuring Stupidity

Humans often struggle to measure abstract concepts directly. For example, while gauging the height of a distant mountain at a glance is difficult, comparing two mountains side by side is easy. This analogy applies to stupidity: direct measurement may be elusive, but comparisons can yield insights.

We may not be able to determine absolute wisdom or total stupidity, but we do ponder both in everyday life—albeit haphazardly.
Increasing our objective precision in measuring stupidity would be immensely valuable.

When a speaker (e.g., a politician, religious leader, etc.) speaks, it becomes possible to measure the semantic emptiness of their discourse. Consider most any politician/preacher speech filled with unverifiable claims like "Together, we can achieve greatness" or "We must come together in faith." These are emotional invocations, not factual statements—essentially hollow sounds. Analysis shows that most of religious and political speeches are filled with such hollow, nonsensical phrases. (Try sifting any religious or political speech through any AI, prompting it for "What percentage of factual content is there in this text?")

But can we actually "measure" the stupidity in a message?

The nemesis of stupidity is truth. Yet, as Yuval Harari notes, truth is 1) scarce, 2) hard to find, 3) hard to prove, 4) hard to understand, and 5) often painful.

This explains why most speakers talk abundant nonsense, which is cheap, easy to assimilate, and impossible to disprove. If we can't measure what is true or false, at least we can measure the factual to non-factual rate. Not all truths are factual (most right-brained truths, like love, music, insight, etc., aren't) yet those are not the subject of this measurement.

We propose establishing tangible criteria to measure stupidity—akin to an IQ score—such as an Stupidity Quotient (or "SQ"). This framework might help us understand stubborn, self-defeating behaviors that lead to harmful outcomes, promoting awareness and better decision-making.

Before Claude Shannon defined the binary "bit" (true/false) in 1948, information couldn’t be measured. His work "materialized" information, making it measurable and enabling all modern information sciences, error correction, communications, computers, GPS, memory storage, and AI.

Similarly, we propose a unit of measurement for stupidity: the "Fool." One "Fool" quantifies the refusal to accept undeniable evidence—such as the fact that the Earth is round. We can define "1 Fool" as representing 100% stupidity (unsustainable), while "0 Fool" denotes something that is factually true, testable, and verifiable. For instance:

    - "It is raining" (and it really is raining) 0 Fools,
    - Newton's laws might be rated at 0.2 Fools,
    - Einstein's Theory of Relativity at 0.1 Fools,
    - Some medical statements (which are somewhat testable) at 0.6 Fools,
    - Most unlikely and untestable opinions (e.g., prophecies) at 0.9 Fools,
    - Counterfactual or impossible events (e.g., "miracles") at 1 Fool.

This can be calculated using the simple formula: Number of Non-Testable Claims / Total Statements, where "testable" means a pragmatic definition of truth (in the sense of William James: "truth" is what works). Invading another country (or your neighbor's house) because you are stronger is bad. Killing because your religion suggests it, is bad. Lying if life is not at stake is bad. Etc.

While I personally lack the skill to develop a precise "Mathematical Theory of Stupidity" akin to Shannon’s "Mathematical Theory of Communication," I hope some reader can contribute. It is the hope and intent of this website to facilitate such initiatives as a forum. Please read on and write us!

An AI enabled software could be created that could "filter" all nonsensical parts of text/speech in -say- a presentation, an article or any talk.

We NEED to measure stupidity to some extent. We cannot continue to be exposed to its damage as caused by cheap opinators, irrational manipulators, political and religious leaders, astrologers, mediums, divinators, and the like.

(*) Claude Shannon defined the concept of the "bit" in his seminal paper titled "A Mathematical Theory of Communication," published in 1948. In this work, he introduced the bit as a fundamental unit of information, representing the amount of information required to make a binary choice between two equally likely outcomes. Shannon's work laid the foundation for information theory and significantly influenced the fields of information and computer science.

Defining Stupidity

While "a lack of intelligence, understanding, reason, or good judgment" is a dictionary-accurate definition, it fails to capture the full depth and harm of stupidity. Stupidity is not necessarily the absence of intelligence; it often involves active processes or tendencies that perpetuate harm.

Stupidity manifests as acting against one’s own best interests or the interests of others, despite available information or evidence. It involves making wrong choices—often purposefully or/and in denial—even when the consequences are clearly pointed out. Stupidity also includes a failure to learn from experience, an inability or unwillingness to consider different perspectives, a lack of empathy or consideration, and even a lack of self-awareness. At its core, stupidity is an active pursuit of ignorance or misinformation, whether conscious or not, that perpetuates unnecessary problems and suffering for all.

This definition goes beyond intelligence to emphasize the behavioral, cognitive, and consequential aspects of stupidity. It acknowledges that stupidity is not just about acting "dumb" but about denying responsibility and stubbornly and repeatedly making poor choices, even in the face of clear evidence or warnings (think of dictators or religious fanatics).

In short:

Stupidity is a disposition toward actions and beliefs that are demonstrably harmful or counterproductive, marked by a failure to learn, adapt, or consider alternative perspectives, and a persistent insistence on those actions or beliefs despite evidence or negative consequences.

Thinkers That Alerted Humanity About Stupidity

Measuring the SQ (Stupidity Quotient)

We posit a Stupidity Quotient (SQ) that can be obtained through self-assessment (see below) or by estimating someone else's SQ by attempting to respond as you believe they would. While the latter method may introduce some bias, it can still provide valuable insights. You can begin the test below.

Pretty much as we test for driving ability or a medical practitioner's license, we can test for stupidity—our own or others'.

The test is based in part on concepts analyzed in the "accordeon" (colored areas that will expand or contract when clicked) below, in which we explore salient areas where stupidity may stealthily prevail. The Latin suffix "-itis" is often used to denote an ailment; for example, just as laryngitis refers to the inflammation of the larynx, we propose the term ideologitis to describe a state of ideological "dis-ease," as opposed to a reasonable engagement with an ideology. While one can appreciate or thoughtfully adhere to aspects of an ideology, fanatical and irrational adherence often denotes stupidity. For example, holding a specific belief about a topic may be justified, but hating or violently attacking those who think differently would be a clear case of ideologitis—unfortunately, this is all too common.

We posit and briefly elaborate on several "-itis" concepts that we find particularly obvious and common. However, we encourage you to participate, comment, and contribute your own ideas.

We do not claim to be correct in any of our assertions; rather, we offer these ideas as areas of thought to be contemplated, evaluated, and explored further.

Email the writer with your comments on this introduction

Click here to begin your self-assessment—or test someone else by responding as you imagine they would!

Ideologitis

Religionitis

Prejuditis

Stupiditis (SQ)

Governmentitis

Ignoritis

Cowarditis

Dogmatitis

Shorttermitis

Ageismitis

Denialitis

Wokeitis

Generousitis