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Cliff wanted to use my knot diagrams in a math exhibit, so I got to meet him in his home, he is indeed the kindest and most dynamic gentleman I've ever met.

I'm also a fan of Cuckoo's Nest, and I recall seeing him on the PBS News Hour when I was a kid, they'd interview him for computer-related topics.

// blush //

I ran into him at the post office in rockridge/temescal. I asked him if he was indeed Cliff. We stepped outside and chatted for about half an hour. It was an incredibly good conversation.

Yikes! I remember that!

Smiles, -Cliff

Interesting, didn’t realize that’s Cliff.

- Related Numberphile:

https://m.youtube.com/watch?v=AAsICMPwGPY&list=PLt5AfwLFPxWI...

- Direct link to his Klein bottle website:

https://www.kleinbottle.com/