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It's not a simple mechanical invention at all, I agree with you, this is a silly/absurd statement.

I recall in my freshman physics classes asking my professor "why are all the modules using inclined planes and pulleys? wouldn't we be able to learn better if the problems involved something we're actually familiar with in everyday life like a bicycle?" (I attended the university with the most bicyclists in the world)

I only needed to see his reaction to realize that a bicycle is pretty damn complex.




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