"So I take it the author can fix any brand of car and would, without missing a beat, answer questions like "where's the expansion tank?" Maybe not, but people

"So I take it the author can fix any brand of car and would, without missing a beat, answer questions like "where's the expansion tank?" Maybe not, but people don't equate ability to drive with knowing how one works. But people do equate being able to surf the web with being "computer savvy".