Historical Normality Bias

The fallacy of judging past societies, actions, or norms by the standards of the present, or conversely, of justifying outdated, harmful practices by arguing "that was normal at the time." In its dismissive form, it's used to invalidate modern moral critiques of historical figures by claiming a lack of historical context. More perniciously, it's used to defend the persistence of antiquated injustices by appealing to their historical commonality.

Example: Defending a founding father's slaveholding by saying, "It was normal then, you can't judge him," commits the Historical Normality Bias. It uses historical descriptivism ("it was common") to avoid moral judgment, implying that collective moral failure excuses individual participation in atrocity.

by Dumu The Void February 4, 2026

Normality Bias

The oppressive use of "normality"—defined by dominant social, cultural, or political groups—as a cudgel to dismiss arguments, identities, or ways of life that deviate from that imposed standard. It asserts that what is statistically common or traditionally accepted is inherently right, rational, and healthy, while anything else is defective, radical, or invalid. It's a bias that mistakes convention for truth.

Example: Arguing against universal childcare by saying, "The normal family has a stay-at-home mother, so policy shouldn't support other models," uses Normality Bias. It leverages a descriptive (and arguable) claim about what's common to make a prescriptive judgment, shutting down debate about what might be better or more just.

by Dumu The Void February 4, 2026

Normal Bias

The emotional and perceptual preference for states of affairs that align with one's personal, constructed sense of normalcy. This is the bias of homeostasis, where deviation from one's internal baseline—even if that baseline is objectively bad—is registered as a threat. It's why people often stay in miserable but familiar situations; the misery is "normal" and thus feels safer than the uncertainty of change.

Example: A person in an abusive relationship may repeatedly reject opportunities to leave due to Normal Bias. The chaos and pain are their horrific "normal." The prospect of peace, independence, and unknown challenges registers as terrifyingly abnormal, making the known hell feel paradoxically safer.

by Abzugal Nammugal Enkigal February 4, 2026

Normality Bias

The societal-level counterpart, referring to the institutional and cultural machinery that actively pathologizes, marginalizes, or renders invisible any person, identity, or mode of living that falls outside the constructed norm. It's not just a cognitive error; it's a system of power that uses bias as a tool. This bias is embedded in language ("that's not normal"), diagnostic manuals, legal codes, and architectural design.

Example: Urban planning that assumes every household owns a car, thereby neglecting public transit, bike lanes, and walkable spaces, enforces a Normality Bias. It physically constructs a world where car-free living is difficult and stigmatized as "abnormal," privileging one lifestyle and disadvantaging all others.

by Abzugal Nammugal Enkigal February 4, 2026