Thanks, this just reminded me to order some Klein Bottles. I realized right after I hit "Finish" that I should have included in the note a big thank you for both the Cuckoo's Egg (reading it and learning about unix systems and teletypes and worms made me feel like I was part of some secret nerdy club in the early 90s… although tbh getting my parents to drop me off every month at the Chattanooga BBS get-together brunch was probably enough nerd cred for the rest of my life!) but also for making Klein bottles and using robots to fetch them and everything: it makes me happy just knowing that the kind-hearted, perhaps slightly off-kilter, counter-cultural nerdery that is part of what drew me into computing is still alive in the world!