Just in case anyone doesn’t know:

Enable captions on his videos!

Went way too long before I realized there was a whole other layer of info on them.

Wow, very cool.

As a refractory designer, nearly every day of my life for the last seventeen years has been spent createing linings or shapes for large complex industrial vessels, mostly steel, glass or cement, and this hits me where I live.

I also find the math and geometry of my work quite soothing. You haven’t lived until you’ve calculated a brick dome manually. The math is so pure.