When is it ideal to open push flop?

When is it best to push flop? In the self research study series Barry Carter reveals you how he attempted to resolve a poker issue then seeks advice from a coach or solver to get feedback on his approach. I just recently played a hand where I had KK on a Jack high board and the solver informed me, remarkably, to push flop for 3x the pot. It seemed like a huge waste of a hand like KK, so I was...