What do you bid as South?
OK, that's an interesting question, though not for this forum but for postmortem or possibly for Master Solvers' Club. A player who took part in the discussion stated the following: "I play double for penalty in those colors, so I'm going to bid 4♠ and watch for the opponent's reaction. If I don't like it, I'll run to 4NT."
How do you feel, is this approach (consciously trying to read "tells" off your opponents) acceptable within the letter and/or spirit of the Law or not?
Edit: Let me spell this out, since my writeup causes confusion.
Certainly, you can't run anywhere if 4♠ are passed all round but at those colors it's probably OK. If the intent is to run any double, than it presumably would be stated as such. So the point is that the player wants to run some doubles but not all of them depending on possible mannerisms of the opponents. Law 74C5, as stated by blackshoe, seems to be relevant as well as Law 73D1, but which way it leans?
This post has been edited by gombo121: 2013-January-16, 23:01