I can do a certain amount of things, mostly bolt off/bolt on. More or less limited by my fear of taking things apart and having extra parts at the end.
My wife has fairly amazing mental powers re: spacial relationships, she's helped me to re-assemble things, i.e., carbs, by looking at parts and visualizing how they would fit together although she knows nothing about them.
My son used to watch me do things, then started doing things on his own. He now has moved away and tackles things I'd have never attempted. I'm shocked, amazed, and very proud of him.
So maybe there is hope after all.