Heterophobia
Aversion to the unlike — when difference itself disqualifies a claim or its bearer
Heterophobia names the active aversion to people, ideas, or evidence perceived as too different from the in-group — the complement of homophily. Everett Rogers emphasises homophily as the force that clusters communication; heterophobia is the hostile flip side: not merely ignoring the unlike, but penalising them for being unlike.
Rogers’s constructive counterpart is heterophily — deliberate contact across difference that can accelerate diffusion. This corpus uses heterophobia for the pathological case: when difference triggers disqualification, ridicule, or retaliation rather than tier-based examination.
Why it matters for truth
Heterophobia explains failure modes where correct minorities are treated unfairly and unwelcome truth is not merely skipped but punished:
- Witch hunts — conformity enforced by targeting the outlier.
- Heresy trials — burned for claiming the earth is round; the claim judged by membership, not evidence.
- Organisational retaliation — whistleblowers, dissenters, and Cassandras silenced so the group can preserve its self-image.
These are not random cruelty. They are social immune responses against evidence that would force reclassification of what the group believes about itself — tier collapse by out-group exclusion.
Lens, not licence
Use heterophobia to name why unwelcome truth dies in organisations — not to relabel every disagreement as bigotry. The remedy remains honest tier, commitment boundary discipline, and records that survive positional override (When Facts Are Wrong — correction paths must not depend on the accuser’s popularity).
Relation to Rogers
Rogers does not use the word heterophobia; he documents homophily and the difficulty of heterophilous ties. We adopt the term here as the failure-mode label for when aversion to difference blocks diffusion of truth inside and across organisations — the dark counterpart to the adoption curve’s clustering.