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[–]GaiusHelenMohiam 2 insightful - 2 fun2 insightful - 1 fun3 insightful - 2 fun -  (0 children)

I am a biologist and this is a good explanation.

but biology doesn't work with 100% certainties like that

I had to train myself not to always give caveats. We biologists would never finish our conversations with each other if we did.