The above posts make sense. The NBA's three point virus is not new. Rick Pitino when with the Celtics had a vision of a team hitting 40% on threes on volume shooting. He also had plans for a full court press.
It comes down to personnel. It is vital that GM's and coaches are on the same page.
Every player should not be given the green light. Evan Turner should not be shooting them ever unless the clock is winding down. Sully needs to hit them at a better rate.
It is basketball wisdom that the easiest way to score is usually to attack the basket.
All five guys don't need to be able to shoot three pointers. This is one of the areas I disagree with Brad Stevens. It's not a bad thing that Amir can hit them, for example, but he needs to be wide open and take his time like one does shooting a free throw. Bass, okay, it made sense that if he can hit a 20 footer, why not step back an extra couple feet?
I have come to the conclusion that the roster still doesn't match the way Brad coaches best and that's why we are currently a 40 and not a 50 win team.