The Celtics begin many (most?) possessions hunting a desired mismatch. But by the time they get it, if they do, they’ve eaten a good chunk of the shot clock, and even an open attempt can be rushed. “You’ve got to run,” he said. “You’ve got to move. You can’t stop and let people just get their radar on you. You can’t let them get their hands and muscle into your body. “I’m sure it’s frustrating for (Jayson) Tatum, because he feels the weight of the world on his shoulders right now.” Is there where straight analytics need to take a seat and let a feel for psychology and how best to stem a tide enter the game? “First of all, analytics have been around the game forever, and I’m all for learning everything you can,” said the exec. “But it’s always been about taking high percentage shots and getting the ball to guys who shoot the higher percentages. Then came the prevailing school of thought that you take 3s and lay-ins and free throws, and you win. But it takes more than that. You have to factor in the point in the game and things like whether the other team is on a 12-0 run — the human element.”