A sophisticated form of self-deception where one's pre-existing prejudices, desires, or ideological commitments are retroactively supported by elaborate, internally consistent rationalizations. The person constructs a logical-sounding edifice to justify a conclusion they arrived at for emotional or tribal reasons, believing themselves to be purely rational. The bias lies in the motivated reasoning that builds the rationale.
Example: A person opposed to immigration reform crafts a complex argument citing selective economic studies, abstract principles of sovereignty, and crime statistics. This Rationalized Bias allows them to believe their stance is reasoned, when its roots are in unexamined cultural anxiety and identity politics. The logic serves the bias, not the truth.
by Dumu The Void February 4, 2026
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