I like Arcidiacono’s story — and play — as much as anyone. But this is crazy talk for reasons that have nothing to do with Arcidiacono showing he belongs in the league. At some point, you have to commit to a plan. That’s why these early-season injuries have been so costly. It will end up costing 25 games or so to see what you have from the trio acquired in the Jimmy Butler trade playing together — and perhaps longer for Dunn and Markkanen to regain conditioning and rhythm. The Bulls, for now, are committed to Dunn being their starting point guard. That was their thought when they almost traded Butler for him in the 2016 draft and when they did trade Butler for him in June 2017. It’s still their thought and has to be until he shows he can’t be. The Bulls haven’t seen that yet because he hasn’t been able to stay on the floor. When he has, he has played well.