This is wonderful, thanks for sharing. I'm a big fan of Hofstadter, but knew about ambigrams before I knew about him, so I'm delighted (but not all that surpris

This is wonderful, thanks for sharing. I'm a big fan of Hofstadter, but knew about ambigrams before I knew about him, so I'm delighted (but not all that surprised) to find out he coined the term! I too love the art of creating an ambigram and my favourite one I've created is one that reads PUSH from one side of a glass door and PULL from the other. Here it is: https://www.instagram.com/p/DH6W36voMe-/ https://www.instagram.com/p/DH6W36voMe-/ Another textual constraint challenge I found similarly satisfying with Hofstadter's "repeated savoring of unanticipated small pieces of visual magic", was one I set myself as a teen to create the word CTRL (my graffiti tag) out of two components for each letter, but the same two components for every letter. I managed to dig out an image of it: https://gist.github.com/OisinMoran/0ca8dbdfea83d2250e723a034a47bcfa https://gist.github.com/OisinMoran/0ca8dbdfea83d2250e723a034...