“Are you really sure that a floor can't also be a ceiling?”
I never thought about the doorways! Thanks for this -- what a fun one. I loved learning that Escher inspired mathematicians (as a maths-inclined person myself who loves advocating for its role in helping us translate patterns and relationships in nature ...)
Thanks for the shoutout, Mike! 🙏 I enjoyed reading this.
There was an Escher exhibition at the Dulwich Picture Gallery (near where I live) a few years ago. It's a little out of the way, so they advertised it with a big sign on the South Circular. I couldn't resist... https://twitter.com/LevParikian/status/677847808494452736?s=20