Cool video on Neural networks

This is a simple example of a graduate level concept in machine learning. With the recent AI hype, I feel this is quite educational

https://youtu.be/0QczhVg5HaI

All this is from the 1960s.  So I guess there have been no fundamental advances, only refinements and faster hardware.

A lot of it is theoretical, of course. I don’t think there are that many programmers that actually put this into practice