system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: If it's so bad for humans to carry a child at such a young age, then why are we capable of it so young?

I saw an 11 year old who was pregnant, and carrying the baby almost killed her and the baby.
gpt
Because evolution isn't perfect. 'Good enough' is good enough. If it were extremely common for girls to get pregnant while not in good shape to do so, and there were a reasonably ready mutation that came up by chance to correct it, then that'd have worked out.

As-is, though, there's not enough need.