Zelandakh, on 2012-October-11, 05:41, said:
This seems to be a somewhat dangerous assumption. For example, do you think that the majority of players who explain "Stayman" play the sequence 1NT - 2♣; any - 3♣ as a natural weak takeout? Because that is the (original) meaning in Stayman. Similarly for inverted minors - can you tell me what the standard collection of sequences and understandings is for this? Because I have no idea. Another example is Jacoby 2NT - how many players saying this do you think promise 16+ hcp? Because that is the original form as I understand it. Similarly for rebids by Opener - jumps to show voids came well before jumps to show a side suit. So what is standard? Or does standard just mean what you think it is, regardless of whether Aunty Betty has ever heard of the changes to their favourite convention that they learned 60 years ago?
I said that the name encompasses
many of the followon sequences, not all. And I was certainly not trying to justify using the name of the convention as an explanation. The point you make is the exact reason why the regulations say this isn't allowed, and I fully believe in this principle, and I think I practice it.
It doesn't matter what these bids meant 60 years ago. Experienced bridge players know how they're common used these days. They also know what kinds of variations exist, so they know what questions to ask if the explanation is not complete.
If the auction goes 1NT-2
♣, do you need to know at that moment what a later 3
♣ bid would mean? If the 3
♣ bid comes up, you can ask for an explanation at that time.