I would rather create a circuit that makes an LED turn on than understand the underlying physics enough to be able to design such a circuit and be convinced that, if I actually created it, it would work. Doing both would probably be better, but that’s a meaningless (and hopefully obvious) opinion.
In short, I like making things work. When something breaks, it is fun to fix it. If it breaks again in the exact same way, it is still fun to fix. Learning why the problem occurred is only useful because you can use the experience to solve it again. If you knew for certain that the problem or one releated to it would never occur again, it would not hurt to remove all knowledge of the solution from your memory. It’s useless. Such an isolated problem probably doesn’t exist, especially if you like to generalize problems, but the point stands.
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