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I guess you made a claim you could hardly defend. At least, in the old days,
to bid twice is stronger than bid once, especially when one bids a new suit,
it almost always shows further interest rather than none.
to bid twice is stronger than bid once, especially when one bids a new suit,
it almost always shows further interest rather than none.
Go to the library. Find any Goren book circa 1940 something. Look up this sequence. New suits at the 2 level by responder, after opener's 1nt rebid, were *non-forcing*, not encouraging.
It is the forcing new minor / checkback stayman / 2-way checkback treatments that are "new". Simple new minor suit bids after 1nt used to be non-forcing also. If you wanted to force you had to jump.
New suits have been forcing, and encouraging, after opener's *non-1nt* rebids. In the very old days, like 1920s, even this wasn't forcing. My friend has a collection of very old Bridge Worlds, it is astounding how many bids were non-forcing. One had to jump-shift to create a force.