barmar, on 2013-August-28, 10:24, said:
And just because the bid is logical doesn't mean it's not a psyche. It's true that if you just bid randomly, that would be considered psyching. But not all psyches are random.
Either a bid accurately (or approximately) describes your hand, or it doesn't (assuming it's a descriptive bid, not an asking bid, although in the case of asking bids we might include inferences about the types of hands that would ask the question). If it doesn't describe your hand, and you did it deliberately, it's a psyche -- the logic behind it doesn't change this. Saying "Any expert in my situation would have come up with that bid" just means that it's a very common psyche, but it's still a psyche.
I explained how the bid could be made logically because people responding on the thread seemed so bewildered.
Regarding "a bid accurately (or approximately) describes your hand", let's look at what the bid means. 1S, for all intents and purposes in the SAYC system, indicates a hand with opening values and 5 or more in the suit. Everyone has agreed that having 4 would be considered a deviation that would not qualify for a psych. Now, you make the
inference that the opener does not have a 6 or 7 card other suit because the opener did not open in any other suit. The 1S bid itself does not deny the presence of such an outside suit. Certain negative inferences are no longer even alertable in the ACBL. If you choose a bid that is not a support double in a support double situation, you no longer have to alert and mention that this denies 3 card support. Similarly, bidding something other than a support double when holding 3 card support is not considered a psych.