[creiht]

I rarely comment on HN, but I appreciate these moments that remind me that the internet can still be a beautiful place. Cliff, watching the Nova special (and later reading the book), was very formative in deciding to pursue a CS degree, and it has been a blessing to see your humble replies here. Keep doing what you do, and one day I will be able to mark off a bucket list item of being able to stop by and purchase a Klein bottle in person!