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Can someone please explain this to us smoothbrains who never finished school? I see a for-loop on the left, and some sort of integral on the right, but that's about it..
It's basically taking the measurement of the area under a curve. The left does it in uniform chunks, and is often less accurate depending on delta x (the size of the chunks). The right effectively makes the size of the "chunks" infinitely small and gives a more accurate answer.
Simple version: Me: Close but either too much or too little potat removed. Mom: absolutely perfect with no skin and no wasted potat.
Sometimes when I'm peeling potatoes, I will peel more aggressively than even the version on the left, because sometimes I want the potatoes to look pretty.
Their technique barely gets them close to their goal, while their mother removes all of the peel, but none of the rest perfectly.