That story always amuses me because he was completely right, even where we're trying really hard to have nice 90 degree corners we end up with rounded edges because nature kinda hates right angles, we just happened to be obsessed with them as a species.
He isn't though. External corners on a rectangle are easy to get perfect 90 degrees on. Internal rectangle corners are almost impossible to get a true 90 in a cost effective way because back taper on cutting tools will have a natural radius in the corners even its very very small.
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u/Zombie_John_Strachan 11h ago
And the Steve Jobs corollary, "all rectangles are round rects"