[masraum]

Originally Posted by Steve Carlton

It's one of those goofy jokes that are funny. To most people, I guess...




Wouldn't a screwdriver be even stronger shaped as a triangle?

Fewer points of contact to apply torque than a square.
This is interesting and goes into some detail about how/why some drives work better than others, at least according to this guy. I assume he's simplified things a bit compared to what an engineer might explain, but I suspect he's mostly correct in his explanations.