Are made by Cliff Stoll the whiz of the see-through recursion at his Acme Klein Bottle Company in Oakland, California!

Cliff’s specialty is the one-sided 3-D topological model of the famous 4-D manifold made of two Moebius strips melded together. He makes baby, regular, classic, large and gigantic Kleins big enough for a cat to chase a rat along its single side! (He also makes Klein Steins to tipple from. Can you imagine Gauss and Euler reaching for their Klein Steins after a hard day at the blackboard? Well, Cliff can!) What I think he should do, however, is to make a building-sized Klein bottle so that we can all take a one-sided walk. Or, better yet, can you imagine a block made of a Klein bottle, so that we could all take a one-sided topological excursion around the block!

But I’m getting carried away here….and rightly so because Acme Klein bottles has earned the Ahadada Seal of Approval! TAAAAA DAAAA! (Drum Roll). Visit their website at www.kleinbottle.com and tell one and all that Ahadada sent you. (My secret goal in producing this modest show of flim-flammery is to convince Cliff to help me create a one-sided, 4-D Klein bottle-ku poem and we’ll give you the nod if and when it happens!) We wish Cliff and Acme Klein Bottles continuing success with their topological ventures! Onward and upward, as they say, and around and around and around!