That's got to be the best summary of personal limitations in the electrical trade I've read. It's exactly like that too, some guys stay in the trade forever and never figure out certain things.
Fortunately the trade is diverse enough that you may not have to. There are some universal things you need to know but some electricians can work their whole life and never bend much conduit or ever develop a good troubleshooting technique. I agree trouble shooting is actually a natural skill. Some people have a sixth sense about what is important in solving a problem and what has nothing to do with it.
When I was in the computer biz one of the things I did was finding a good fit for each guy who worked on our team. When you have round holes and square holes it is silly to try to pound square pegs in a round hole
