Correct contract bridge / by E.V. Shepard ; including the official Laws of contract bridge adopted by the Whist Club, New York, and by all the leading clubs in America.

I60 CORRECT CONTRACT BRIDGE
Trumps on a sure trick in case you cannot bid your
best suit.
Evidently the no-trump approach is clearer in
meaning than the short suit approach. The former
states that either no-trump or a strong suit shift
is the object of the opening declaration. The short
suit approach method never states whether the declaration indicates a long trump suit or great strength
held in honors of short suits; only subsequent procedure can clear that ambiguity of purpose.
The no-trump approach wastes no time in arriving at an understanding between partners. The
short suit approach often wastes at least one bid
before the opening bidder's partner learns which
type of holding caused the two-bid. A wasted bid
or two when a slam is really sought often prevents
one partner from showing some feature that will
make plain to the other player whether or not game,
little slam, or grand slam should be the limit of
safe contracting.
Before definitely deciding just what an opening
bid of two of a suit should mean it will be best to
consider the relative number of hands that meet the
long suit requirements for probable games and slam
possibilities, and the number of hands that contain
the same number of probable tricks in high honors
held in short suits.
ANALYSIS OF OPENING TWO-BIDS
In a complete series of all hands possible to deal,
any designated suit (as hearts) will be distributed
as follows: