[ There would be a fifty percent chance of him being flattered by the idea and another fifty percent chance of him being offended by it. Thankfully, Rita keeps that thought to herself, so it doesn't come up. To her actual questions, however, he can only shrug. ]

Up for debate, I think. While I would say it must take at least some talent for it to actually use the information practically, the other English magician here, Mr. Strange, likes to claim anyone can learn it.