fixated on crosswords
"i was hyper-fixated on crossword puzzles. rebus puzzles happen on thursdays. they don't tell you—it's a vibe check for your brain. one time, i did lines of cocaine and adderall trying to solve a crossword. very intense. also, i tried writing crossword puzzles, but making them symmetric is hard. like, technically, you could represent them as a symmetry of d4, the dihedral group of order four. yeah, i've written crosswords."