I read a really good article earlier this week. It explained a lot about why certain people are good at articulating specifics in technology, while others can speak of concepts, but not get deep into the details. Those in the latter category tend to be the "absent-minded professor" type and are often more cerebral or some such thing.
Of course, since I fall into this latter category, I cannot remember the author, title, publication, or location of this article. Ah, irony...how thou mockst me!