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So, appalling scam aside, everyone knows what a Klein bottle is or what it does? First I've heard of it, and neither Stoll's site or the Amazon listing shed any light on the topic...just in-jokes.



It is mainly a joke/gag product for mathematicians, or a cool office decoration. Nothing you would buy without the background knowledge.

But second sentence in the listing:

> Like a Möbius strip, this Klein bottle has only one side. In addition, a Klein bottle has no edge - the connection from "inside" to "outside" is smooth, and the bottle has no lip.

Is proper descriptive.



I love that the “hand-blown” bottle pictured in the article is one of Cliff Stoll’s.




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