Well, yes and no.It sems to me we are looking at this problem from the button's point of view. According to point two and according to Daniel's reasoning the button figured BB could have a flush when he bet out on the river. No word so far whether the button (Daniel) also could have put the BB on a flush draw either on the turn or already on the flop.But in point three, still reasoning from the button's point of view, he (Daniel) is contemplating the possibility for the BB be on a flush draw already by the turn...I am not arguing the play, I just try to understand the reasoning. Maybe it is be