Re: Don't employ a rock star data scientist
That reminds me of a story that Richard Feynman tells (in one of his books) about working on the A-bomb project. He was 22, fresh out of physics grad school, working with a lot of famous older scientists, among them Niels Bohr. Bohr didn't like Feynman, but wanted Feynman to be present at all his meetings, simply because Feynman was such a smart-alec that he would say so when he thought something was bad idea, or wouldn't work. (The other scientists were too intimidated by Bohr's reputation, and afraid of looking stupid.)
In other words, Bohr was the 'rock star' physicist on the program, and most people believed what he said because of his formidable reputation and achievements, But Bohr knew that he could still be wrong, even overlook something.
So it is for the rock-star anything, even a legtimately gifted one. (Go back and listen to all the Beatles' albums; even they wrote some forgettable songs.)