"When I was a child, we didn't have as many vaccinations and I'm fine" = survivorship bias Sure, you're fine, but the people who aren't can't tell you that because THEY DIED
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You may know this perfect example of selection bias - this map are the bullet holes in returning aircraft in WW2; Abraham Wald's insight was not to put armour where the holes were, but where they weren't.
- End of conversation
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