The problem was this: you have a thousand bottles of wine and an unlimited supply of rats. Lucky you, right? Unfortunately, one of the bottles is poisoned. You can feed the wine to your rats, and if any wine they drink is poisoned, they'll die in an hour. How many rats do you need to figure out which bottle is poisoned in an hour? (Actually this was the warmup. The problem I was thinking about when I walked into the pole is what happens if two of the bottles are poisoned. Anyway, message me with your thoughts! This is a really fun problem.)
Other things I like, in no particular order: singing, musicals, physics, cognitive science, making well-organized nested lists, learning stuff, teaching stuff, Pokemon, meta.
Every winter, after spending Christmas with my family in Seattle, I fly to Boston to catch up with old friends and then spend 2-3 days solving puzzles nonstop with them. This one was my favorite this year. (Give it a try! Reverse image search will be very helpful.)
Nowadays I answer people's questions about math, on MathOverflow, math.SE, and sometimes Quora. People tell me that when they google a math question, they constantly find something I've written as an answer. Warms my heart. I especially love when they end up on my blog (adult content warning: category theory).
Movies: Memento, It's Such a Beautiful Day, The Tale of the Princess Kaguya, Moonrise Kingdom, Walk Hard, Drop Dead Gorgeous, Pitch Perfect, Mean Girls, Shaun of the Dead, Twelve Monkeys
Music: the Hamilton soundtrack
I think marrying one person and raising two kids in a suburban house sounds incredibly lonely, and it should be possible to do a lot better. I lived in a fraternity in college (not that kind of fraternity, I promise), and it was easily the best living arrangement of my life. It felt good and natural in a way that nothing else before or since has. Someday I'd love to raise children communally in a group house with my college friends. I think children were never intended to be raised by two people, and also I miss my college friends.
I feel very strongly that children should be treated with much more respect than they currently are. Children don't consent to being born, so it seems like the least we could do. I think compulsory education is unethical and forcing kids to wake up early to go to school is child abuse.
I hope that by the time robots finish taking our jobs, people will realize that the ability to get a job should never have been how we decide who gets to live and who doesn't (CW: suicide), and institute universal basic incomes before it's too late.