7mo ago

I feel so much better now that I also have a skill to show off on the internet

20 comments

In my case the chair wobbles on 3 legs and I have to shim the 4th one.
- Oh I thought this was about how to make a chair not wobble anymore
- According to the other comments here you should just rotate it
This reminds me about Numberphile has a video that proves you can get a 4 legged table to be stable with all 4 legs touching the ground by rotating it.
- Does it require any arbitrary constraints on the topography of the floor?
  
  Sorta. The function height(angle) needs to be continuous. From there it's pretty clear why it works if you know the mean value theorem.
  
  This can’t actually work if the floor is a level plane right?
  
  Yes, the floor has to be bigger than the chair.
- https://m.youtube.com/watch?v=OuF-WB7mD6k
I only manage two but that's how many legs I have in total so no change to be on more than two while doing anything else
Not that impressive on carpet
Impossible, guy would need a true level surface.
- Hold my beer. I can do it on any surface with just three legs.
Does it work with blue chairs?

20 comments