MIAMI — Sometimes, two simple words can capture an idea so completely that they become a permanent part of our lexicon. Carpe Diem. Love Endures. It’s Whatever. That last one might not yet be eligible for enshrinement, but Joel Embiid made his best case for it after a 120-85 loss to the Miami Heat in Game 5 of the Eastern Conference semifinals left the Sixers 48 minutes from the end of their season. The words have become something of a mantra for the big guy over the last couple of seasons. Anytime he finds his mind drifting toward a problem without an obvious solution — usually at the behest …