I found this via https://andrewgelman.com/2018/11/30/stephen-wolfram-explains-neural-nets/ https://andrewgelman.com/2018/11/30/stephen-wolfram-explains... which

I found this via https://andrewgelman.com/2018/11/30/stephen-wolfram-explains-neural-nets/ https://andrewgelman.com/2018/11/30/stephen-wolfram-explains... which is a nice little intro.