barmar, on 2013-January-24, 19:31, said:
Because the game is supposed to be about the bids and cards, not mannerisms.
I strongly disagree. The game is about bids and cards
and psychology, which among others includes interpreting the mannerisms by the opponents. Interpreting mannerisms by your own side is banned, and so is "acting mannerisms" (both for communication with partner and for misleading opponents). But reading opponents' mannerisms is an integral part of the game, as is inducing an opponent's mannerisms by the play of the cards. Avoiding that you show mannerisms that opponents could read is also part of the game.
It is well within the rules
and the spirit of the game to lead the jack and observe from the corner of your eyes whether LHO has a problem. (No staring and no looking at his cards!)
Psychology and reading your opponent's mind are not exclusive to bridge. It is part of any game. Even chess players will tell you that the psychology of the game, including reading your opponent, is an essential skill and it is important to have a poker face. And it happens to be one of the aspects of playing games that I find highly attractive.
It is also the reason why I like playing with screens. Though screens are by no means perfect and quite a bit of information passes through it anyway, they make it a lot easier for me to be sure that the information that I am using comes from my screen mate and not from my partner.
Rik
I want my opponents to leave my table with a smile on their face and without matchpoints on their score card - in that order.
The most exciting phrase to hear in science, the one that heralds the new discoveries, is not Eureka! (I found it!), but Thats funny
Isaac Asimov
The only reason God did not put "Thou shalt mind thine own business" in the Ten Commandments was that He thought that it was too obvious to need stating. - Kenberg