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About this quote

What does it mean?
Any ancestor of yours who died young would have had no descendants, so every person you are related to must have survived to reproduce.
In plain terms
Everyone in your family tree lived long enough to have children, otherwise you would not exist.
What can you take from it?
Your existence proves all your ancestors survived to adulthood.

Where it applies

  • genealogy discussions
  • understanding ancestry
  • explaining survival statistics

Putting it to work

  • teaching probability in families
  • explaining evolutionary success

Questions to consider

  • What does your survival say about your ancestors?
  • How does selection shape family trees?

Another view

This statement ignores ancestors who died after reproducing but before you were born.

More from Richard Dawkins

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  3. Let us understand what our own selfish genes are up to, because we may then at least have a chance to upset their designs, something that no other species has …

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