JLOGIC, on 2011-September-03, 20:52, said:
Do not like. Why should we be forced to bid 1N over a bid by RHO?
You're not. In trying to simplify the description I may have lost some of the nuances of my suggested methods. Here's another go:
Pass = happy not to have to bid
Dbl = A hand that would have bid 1♠ over a pass, and wants to bid, and doesn't want to bid 1NT
1NT = A hand that would have bid 1♠ or 1NT over a pass, and wants to bid, and doesn't want to double
2♣ = A hand that would have bid 2♣ over a pass, and wants to bid
etc
Dbl = A hand that would have bid 1♠ over a pass, and wants to bid, and doesn't want to bid 1NT
1NT = A hand that would have bid 1♠ or 1NT over a pass, and wants to bid, and doesn't want to double
2♣ = A hand that would have bid 2♣ over a pass, and wants to bid
etc