[HeartA]

I am in favor of 15-17 range for 1NT oening. Since 2NT opening (including 1x-1y-2NT) deprives the space for invitation for game (3NT or 4M), it is not good to have a big range. I play 18-19 for 1x-1y-2NT and 20-21 for direct 2NT.

[Antoine Fourrière]

I think both 15-17 (including good 14) and 16-18 (including good 15) are fine if you don't open all 11 counts, because these hands are often difficult to rebid, both in two-player bridge and in four-player bridge.
But I do prefer 16-17 (including good 15) from a constructive point of view, since responder has MUCH more room on a one-bid followed by 1N than on a direct 1N.

It has already been somewhat discussed in this thread.

[xx1943]

hrothgar, on Nov 12 2004, 04:25 PM, said:

Amusing theory.
Completely erroneous, but that's what makes the comment so funny.

K-S and Eastern Scientific both use 5 card majors and a forcing NT.
However the core of the systems are completely different.

I guess "Eastern Scientific" is 2/1.

Then there are only two possibilities:

Either I don't know enough about 2/1 or ..........................