system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How did early humans deal with the removal of umbilical cords?

Were early humans able to cleanly separate the mother from child? Did these separations result in "belly buttons" as we know them?
gpt
If you don't cut the cord then this happens:

Child is born with cord leading into mother.  Placenta (afterbirth) comes out within an hour or two, and dries out/shrivels off.  Belly button closes off like normal.

Plus human mothers carry their young, so it's not like they need to be ready to run at a moment's notice :)