[xjwm]

I just ordered one of these recently! Last week, I finished reading "The Cuckoo's Egg,"[0] about a computer espionage case in the late 1980s (great book, by the way.) Afterwards, I was looking up the author's information, and found the klein bottle website, and videos with Numberphile.

Cliff actually sent photos of the klein bottle I ordered as it was being packaged up for shipping! Lots of humorous tidbits hidden all around the website. Worth taking a few minutes to explore around.

[0] https://en.wikipedia.org/wiki/The_Cuckoo%27s_Egg

[themodelplumber]

Wasn't that an awesome story? I enjoyed the PBS Nova documentary too, with reenactments starring real people from the story.

Btw, if you like interesting people with wide-open minds who also sell stuff from their fun and quirky websites, I can share a few others:

http://www.constructingtheuniverse.com/

https://www.denniswoodruffshow.com/

https://www.grand-illusions.com/

[edanm]

And as a great HN tie-in, The Cuckoo's Egg actually mentions Paul Graham and Robert Morris, two of YC's founders, in its last chapters.