Do I need to know how it works to use it?

That was the question my niece asked my sister when she was learning to drive. Of course, the answer was "No, but it can help." I guess the same theory applies to Computer architecture. I really don't care what it looks like inside - or that there are 1024 bytes in a kilobyte (my husband tried to teach me this stuff when I first turned on a computer in 1994). I just care that it runs. And that is funny for me - especially when you consider that I replaced the engine of my car when I graduated college. Ok, my dad and I did it. But that was interesting stuff.
What is inside of a computer to me is just a bunch of gobble-tee gook. I know I can learn it if I have to (and I realize now that I have to), but I really don't care. Does that make me a bad computer operator? I don't think so - just one that will end up spending more money than I would otherwise.