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[–] • 2 pts

Spends most of the video building up a complicated mechanical system, then at the end guts the whole thing in favor of ropes and pulleys because of friction.

[–] • 0 pt

Welcome to the magic of invention.

Ineeficient designs are often replaced by more efficient ones.

[–] • 1 pt

I've replaced a lot of window regulators. They use fishing wire now :)

[–] • 0 pt

In the UK they replaced sash windows which operated with hemp rope and lead counterweights, with complicated scissor mechanisms which wear and go out of alignment after a few years

[–] • 0 pt

Cool video for people who have no concept of how that stuff works.

[–] • 0 pt

Which negro invented that?