Humans have lived for much, much longer than the approximately 10,000 years of settled agricultural civilization.
All you have to do is mate.
There are always a few people who are hyper-normal.
The body is just the vehicle for something else.
Humans are language machines, computers are language machines.
A lot of people use collaborative technologies badly, then abandon them. They aren't 'plug-and-play.' The invisible part is the social skill necessary to use them.