I'm getting more and more puzzled by this.
As North, I have 6 points, West seems to have 7-9, that leaves 25-27 between the other two hands. East has an opening hand, South has a double of an opening hand. Later events have shown East's hand to be minimal(ish). We know (I assume) that South has four hearts, but a hand that chooses to double rather than overcall in hearts. Surely all the hands are so constrained by the AI that any vague inferences from a perfectly natural question must be non-existent.
South's question. I don't recall seeing South's hand anywhere on the thread, so it is difficult to know why the question was asked. However if it was me as South, I would know that I have an opening hand, partner has made a bid which, whilst non-forcing, is potentially reasonably strong, and the opponents are competing with an artificial bid, the meaning of which I have no idea about. (I will say here that I have NEVER seen that 2
♥ bid before.) Am I really supposed to be able to work through all possible meanings of the 2
♥ bid, including meanings I have never seen and could not possibly imagine, and infer that I will pass every single one of these hypothetical meanings? All in tempo? Or should I just ask about the alerted bid and find out what it means? After all I have no idea what is going on. Isn't that what alerts are for?
As North, I would know that South has no idea what is going on, and would find it impossible to ascribe any meaning to the question other than "South doesn't know what's going on".
As an aside, Jeffrey says
Quote
In that case, I'll ask North to give me a few example South hands opposite which 4♥ is the right thing to do.
I think that is rather ambitious. I doubt very much whether many non-experts construct hands opposite. I'm certainly not capable of doing so. All I can do is use my experience to evaluate my hand in general terms against what I know from the auction, use what tools I have, LTC, LTT, and decide how many tricks I am likely to make in offence or defence.
I find the 4
♥ bid difficult to fathom at the vulnerability, but I find the 3
♣ equally baffling, and that occurred before the alleged UI. When polling, must we not only poll people who believe that 3
♣ is the right bid?
(I am aware that we are told all players at the table are of a good standard, so perhaps I am underestimating North/South's experience.)