A recent twitter thread that could be helpful - https://twitter.com/johncarlosbaez/status/1056200189130600449 https://twitter.com/johncarlosbaez/status/10562001

A recent twitter thread that could be helpful - https://twitter.com/johncarlosbaez/status/1056200189130600449 https://twitter.com/johncarlosbaez/status/105620018913060044... And this from the same thread :) https://pbs.twimg.com/media/DqhjmPdU4AAb979.jpg https://pbs.twimg.com/media/DqhjmPdU4AAb979.jpg