The man with 1,000 Klein Bottles UNDER his house - Numberphile

this numberphile/Cliff Stoll video is on a different topic, klein bottles... or maybe more the travelling salesman/knapsack problem, but it's a must see. Cliff is a cool guy (whose geewhiz excitement I can only take in small doses but) he's worth following ▶ this video

Cliff is an amazing person. Just a joy! Every time I see him on Numberphile , my life is made better. link ▶ this video P.S. Cliff, we know you're on HN. Please continue being yourself, it seems like a really great person to be!

I thought I recognised the name... turns out Cliff is the guy from the Numberphile videos who loves klein bottles. He is such an enjoyment to watch. ▶ this video

If you don't happen to have the time to visit him, here is a playlist of videos Numberphile did on Klein Bottles, his basement warehouse, the intrinsic curvature of pizza, and a whole bunch of other interesting things: ▶ this video

Bah they forgot to mention the best bit. He keeps already-made klein bottles in the crawlspace under his house, and built a remote controlled fpv mini-forklift to retrieve them on demand: ▶ this video

Everything this guy does is hilarious and entertaining. See later talk about this event: link And he drives RC forklift under his house to store Klein bottles he's selling! ▶ this video

To learn about the operation, watch the Numberphile video, “The man with 1,000 Klein Bottles UNDER his house” ▶ this video

You should also watch the related video about how he stores Klein bottles under his house. It's fascinating. ▶ this video

No discussion of Klein bottles would be complete without mentioning Cliff Stoll's Acme Klein Bottle company. link His warehouse is pretty unique: ▶ this video

So in 2015 [1] you said you ordered enough bottles for about 10 years, but you're already running out? That's quite the success story you have there! [1] ▶ this video

> Earnestness, for example, is pretty far away from my conception of "playful" or "flirty" or even "fun". Cliff Stoll is the most earnest person I have talked to in the past year, and also one of the most playful and fun. See e.g. ▶ this video I think you have a non-standard personal definition of “earnest”. As I understand the words, earnestness and playfulness are completely orthogonal/unrelated attributes.

> Of course, these days, he's the best dang Klein bottle glass blower in the game. And of course, he hires out the manufacturing. That's why he has (an awesome, little) warehouse under his hour full of them. ▶ this video