James Tanton on X: "If you google "bad elevator button designs" a whole slew of images come up. Today's "puzzle:" If you could design/arrange/present elevator buttons in a way that would be
Some Tampa Bay high-rises skip “unlucky” 13th floors. But lately, some don't
Elevator door-close buttons don't do anything
Vintage elevator 13 floor panel – The Build Cave
File:Missing Floor 13.jpg - Wikipedia
My building doesn't have floors for 4, 13, and 14. : r/mildlyinteresting
Elevator Trio 13 Floor Panel, Call Button Panel and Elevator Sign. - Etsy
Why Is There No 13th Floor in Many NYC Buildings? | StreetEasy
Superstitious? Nashville's new high rises might not have a 13th floor
13th Floor Elevator Button | 13th Floor Elevator Button Phot… | Flickr
Vintage Elevator 13 Floor Button Panel - Etsy Norway