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Cliff Stoll didn’t pass away, he merely entered a non-orientable phase state.

written mere inches from my klein bottle.

glad to see you here Cliff.

Smiles & one-sided cheers to you, Serph. Sure hope your Kleinbot is still working properly.

You know, he's the perfect subject for a kind of Chuck-Norris-joke-esque thing

Cliff Stoll is the only person on Earth who can paint only the inside of a Klein bottle, while leaving the outside unpainted