Mashadar

I disagree about the "wild or gambling" aspect. With such wild distribution, any action - pass, bid, even double - could win or lose a dozen IMPs. For me, it is by no means clear which action has the best chances to be successful; therefore, I can't judge any of these actions as wild or gambling. The fact that I wouldn't bid that way doesn't change that.

Why does West expect to beat 3NT if N-S have 17+9 points, but not if they have 19+7?