>Not knowing how isn't proof it can't be done.

Human interaction skills falls into the category of things that knowledge doesn't even remotely guarantee outcome.

You can teach a group of socially awkward and introvert people an entire 4 years course of how to be a charismatic socialite and most of them still won't become one.

> Lots of things are currently happening in the world that were just science fiction not that long ago.

And lots of things are still happening in the exact same way it has happened for thousands of years. Technology can very often amplify human instincts, but it will very rarely undo them.