Decided on a whim to fix up an old car from the 80s. I was able to tear it down to the frame and reassemble it with not much more than a set of imperial wrenches. That's a bit of an oversimplification but not much. And while there was a lot that could go wrong there was nothing that was a black box where you could get to a point where if something was wrong you would throw up your hands and say, “Oh, well. Guess this is garbage now!” Different time, I guess.