Either the Bucks are going to go something like 23-7 from here on and make the playoffs, or they will not do that and they will not make the playoffs. The former would give them a record 43-39. Not even a lock, but probably just enough.
What are the chances that the Bucks go something like 23-7 from here on? Not tremendous. That is a winning percentage of .766, which is better than all but two teams in the NBA this season. Those two teams (the Warriors and Spurs) are two of the best regular season teams ever.