We all use electricity. Does it then follow that we must know how to wire it up to turn on a light bulb? How about driving your car? Is it essential to understand how to bolt things together?

How about using toilet paper? Is it essential to know how to pulp trees to make it?

Some persons have lost track of how the developments of progressive technologies happen. It isn't by requiring everyone to learn a certain skill beyond the universally needed writing and arithmetic, it's by enabling those who have a flair for certain tasks to pursue them, and then from those few, we all benefit.

And then there's eating. Is it necessary to teach every child to cook to allow them to eat? It would be nice, but it's far from necessary.