“He is such an enjoyment to watch.”
Cliff Stoll is delightful to watch.
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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

2.2M views · Jun 22, 2015 · 6:49 · 8 HN recommenders · 14 mentions · discussed 2015–2024
Numberphile visits Cliff Stoll, the man behind ACME Klein Bottles, and sees how he stores a thousand glass Klein bottles in a crawlspace under his house. A remote-controlled forklift fetches them.
Why Hacker News points people here: HN commenters love Cliff Stoll's earnest, playful personality and point to this as a delightful look at his unusual warehouse.
“Cliff is an amazing person. Just a joy!”HN comment, 2020
“He is such an enjoyment to watch.”
Cliff Stoll is delightful to watch.
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
“Cliff is an amazing person. Just a joy!”
Cliff is a joy to watch.
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!
“but it's a must see”
Must-see Numberphile video with Cliff Stoll.
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
“You should also watch the related video about how he stores Klein bottles under his house. It's fascinating.”
How Cliff Stoll stores Klein bottles under his house.
You should also watch the related video about how he stores Klein bottles under his house. It's fascinating. this video
“To learn about the operation, watch the Numberphile video”
Explains the Klein bottle operation.
To learn about the operation, watch the Numberphile video, “The man with 1,000 Klein Bottles UNDER his house” this video
“Everything this guy does is hilarious and entertaining.”
Entertaining RC forklift storing Klein bottles under his house.
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
“He keeps already-made klein bottles in the crawlspace under his house”
Remote controlled mini-forklift retrieving Klein bottles from crawlspace.
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
“here is a playlist of videos Numberphile did on Klein Bottles”
Playlist of Numberphile videos with Cliff Stoll.
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
“Numberphile did a video a couple of years ago that featured the forklift in question”
Features the forklift in question.
Numberphile did a video a couple of years ago that featured the forklift in question: this video Cliff is a really neat guy. I met and talked to him briefly once (at Dayton Hamvention, 20ish years ago). He's a really, really nice guy.
Example of Cliff Stoll's crawlspace warehouse.
It's been implemented to some degree by Cliff Stoll for his klein bottle business. Or rather, he started a warehouse in his crawlspace. Same difference... this video
Shows the little warehouse full of Klein bottles under his house.
> 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
“Cliff Stoll is the most earnest person I have talked to in the past year, and also one of the most playful and fun.”
Example of earnest and playful person.
> 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.
Cited as 2015 source on Klein bottle ordering.
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
“His warehouse is pretty unique”
Shows his pretty unique warehouse.
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