4 ms·

Natural selection cannot apply if the vast majority of deaths occur in a demographic that is way past its reproductive phase...

• tirant 7y ago
  Unless the survivality of that demographic has an impact on the survivality of their descendants, as it has been proved.
  • qayxc 7y ago
    Please elaborate, I'm unable to follow you.
    • 2a0c40 7y ago
      https://en.wikipedia.org/wiki/Grandmother_hypothesis https://en.wikipedia.org/wiki/Grandmother_hypothesis
      • qayxc 7y ago
        Thanks! But still unproven then, because it's a hypothesis and not a theory...