There may be some youngsters who don't know who Cliff Stoll is.

He wrote "The Cuckoo's Egg" which is a riveting tale, capable of entertaining nerds and non-nerds alike.

He sells glass Klein Bottles, huge, medium, tiny, earrings, and more.

He's given a TED talk: https://www.youtube.com/watch?v=Gj8IA6xOpSk

He's brilliant, bonkers, and wonderful company. I spent a fantastic morning with him early last year (2024) and it was brilliant fun. I will for many, many years treasure my signed Klein Bottle and my signed copy of "The Cuckoo's Egg".

Thanks Cliff