Also, for the mind.
Think mathematics: you take a 50 words phrase posing a problem, you translate it in the maths' language, you solve it and you get a result, mostly 0 (zero). I use to joke, while studying, that solving maths problems is like working for nothing as I was looking to find the 'zeros': nothing = zero. Then you return the answer by interpreting the meaning of the zero into a n-words phrase. Shortcut tools for lazy people, like me.

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