> Assumption that close to impossible collisions don't happen is a belief, not a proven mathematically fact. I'm not assuming they're impossible. I'm estimati

> Assumption that close to impossible collisions don't happen is a belief, not a proven mathematically fact. I'm not assuming they're impossible. I'm estimating the probability, and rationally prioritizing risks based on probability and severity of impact, balanced against the real-world costs of using gigabytes of source code as a primary key vs a SHA-256 checksum.