AIM Framework glossary
Prior Examination Inversion
Canonical definition
Prior Examination Inversion is the phenomenon whereby the most consequential input to Belief-formation, the prior probability assignment P(H), is conventionally the last to be scrutinised, if it is scrutinised at all, because phenomenological immediacy makes priors feel like background facts rather than assumptions, epistemic norms focus attention on evidence evaluation rather than prior audit, and social costs of questioning shared priors exceed the social costs of questioning evidence.
Explanation
In Bayesian updating, priors determine the attractor, which stable Belief state the system converges toward, while evidence determines only the path to that attractor. Yet standard practice in law, science, and everyday reasoning audits evidence exhaustively while treating priors as given. A courtroom subjects witness testimony to cross-examination (evidence audit) but never asks whether the moral framework that defines the offence is itself a confabulated prior (prior audit). Prior Examination Inversion explains why this ordering persists: priors are experienced as "just the way things are" rather than as contestable assumptions; norms of rigour are defined in terms of evidence handling; and questioning shared priors triggers social sanction because shared priors are load-bearing infrastructure for group identity. The inversion means that the input with the greatest influence on outcomes receives the least scrutiny, a structural vulnerability exploited by every Confabulation Cascade. See Bayesian Belief Dynamics (Axiom 8), Confabulation, Structural Output Principle. Framework-Specific Construct / Validated Empirical Pattern.
Epistemic status
Validated Empirical Pattern.
Derivation
Related terms
- Bayesian Belief Dynamics (Axiom 8)
- Confabulation