Game Of Life in one line of APL, step by step

An old friend ...

Most submissions have little or no comments - I've marked those that have more than just one or two ...

https://news.ycombinator.com/item?id=4642628

https://news.ycombinator.com/item?id=4611015

https://news.ycombinator.com/item?id=3840273

https://news.ycombinator.com/item?id=3602025

https://news.ycombinator.com/item?id=3289795

https://news.ycombinator.com/item?id=3279927

https://news.ycombinator.com/item?id=2889115

https://news.ycombinator.com/item?id=2547655 : 22 comments

https://news.ycombinator.com/item?id=2210070

https://news.ycombinator.com/item?id=1601472

https://news.ycombinator.com/item?id=1499630

https://news.ycombinator.com/item?id=1041500

https://news.ycombinator.com/item?id=944431

https://news.ycombinator.com/item?id=451951

https://news.ycombinator.com/item?id=451923 : 31 comments

https://news.ycombinator.com/item?id=204042 : A few comments