The latest brain mush to come out of popular science is the finding that thinking about an activity, like playing the piano, makes the same brain connections as practicing, and therefore it's the same as practicing.
Really? Does that apply to all activities?
Your heart surgery is about to begin. You have a moment to chat with the surgeon.
"Hey doc, you've done this operation lots of times, have you?"
"No, not at all, but I've thought about it a lot."
You reach for your Bible.
