Slowman: my opinion: move 1 is worth 1.5 points (1+2 follow-up, so 3/2=1.5) But if white takes this point, he creates 3rd 2-point move, so he can take 2 of them
Let's just look at the bottom two lines.
White makes one point at and threatens to capture .
We both agree that the next play is worth 2 points by deiri counting. But if is worth only 1.5 points, then Black's reply is bigger, and Black should connect.
By comparison with Black's playing first, White has one more point. So if we start off assuming that is a 1.5 point gote, we are led to see it as a 1 point sente.
If Black plays first White has 0.5 point at , 1 point if White plays, no points if Black does. The swing is 1.5 points.
Slowman: Thanks, Bill