mycroft, on 2023-May-18, 10:27, said:
Okay, "12-14". People need to know when I say that to ask "what 11s do you open"? Because with one partner, it's "A A K or noteworthy 5-card minor"; with another, it's "A A K or connected honours in long suits"; with another, it's "11s that don't look like 10s". With another yet, it's "if I do, I'm 100% responsible for the result."
Okay, at least one of those should be "11-14"? Now, people need to know when I say that, to ask "what 11s do you not open?" Same deal. And, of course, they should be asking "so, what 10s do you open?" in case I'm one of those weirdos, right?
A common agreement here for strong NTs is "good 14 to flat 17". basically "14.5 to 16.5". How are they supposed to "simply" Announce this? 14-17 is a lie (on both ends). 14-16 is a lie - which will get called on when the 4333 17 shows up (or when 1NT is rebid on the 2434 14 with honours in the short suits). 15-17 gets us back to the original problem - "what 14s do you open?" (viz the current expert "14-16", which "everybody knows" includes a bunch of - maybe half of - 13s).
Not saying you don't have a point, but "simple" HCP doesn't cut it for ranges. What the qualifiers should mean, however, or what you should be able to assume without qualifiers, really needs to be spelled out, rather than relying on people's opinions of their own ranges.
Which I have iterated to ACBLCC on more than one occasion. It seems to be of lower priority than other things.
I could (easily) live with the simplest possible answer to blackshoe's questions, namely that if we announce "12-14" then less than 50% of 11s are in range, more than 50% of 12s and 14s are in range and less than 50% of 15s are in range. So the effective range could be as wide as 11.6 to 15.4 or as narrow as 12.4 to 13.6. Does that change the life of opponents? Yes, but not as much as other detail, at any rate. How can it be controlled - do we ask this about other agreements? It is open to statistical verification with electronic play, for what that's worth.
This heated concern about NT range disclosure seems to be a North American thing (as is maybe the related problem: I have some pretty unruly players, but none that would announce 12 yet open any 11). There are many other details of agreements - including details of NT agreements such as singletons, 5-4, six/seven card suits etc. - that attract more attention than upgrading around here, perhaps rightly so. And of course announcing them is a recipe for disaster.