Understanding is all a matter of degree. As Carl Sagan once said: “If you wanted to make an apple pie from scratch, you’d first have to create the universe.” Well, no one can create the universe, but it’s still pretty easy to make an apple pie from its basic components, if not it’s basic elements.
And just like apple pie, the marvel of our age is that many very powerful tools are available to nearly anyone, and you need not understand them in minutia to get good use of them. But in all things human, knowledge is power, and the more one is willing to learn, the more one can do.
It is always beneficial to spend at least a little time to find out more about how things work. Technology is the hallmark of human kind. There is no other being that not only depends on tools, but thrives by their continual advance.
One thing is certain: electrical devices are all about the smoke. If you let the smoke out, they don’t work no mo.