I love this channel! Seeing how different structures could be made like the wattle hut and roof tiles are really cool. Makes me want to get out there and do some of the same; but I don't have anywhere near his talent at that sort of thing. Impressive stuff.
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.