661_Pete, on 2017-September-26, 06:01, said:
*I haven't a clue why....
You haven't a clue why the Stop card is used? After a jump in bid, and in some countries after all competitive bids at the three level, it is assumed that LHO may need some extra time to; is usually often interpreted as 10 extra seconds of thinking time.
If you hold the stop card out for approximately 10 seconds, left-hand opponent can use this time to think without also trying to keep track of how much time he is taking. If you control the time, nobody has to worry about a possible break in tempo, unless it exceeds the 10 seconds by a fair amount.
I am of the opinion that if the Stop card is removed prematurely you can bid when you like, up to about 10 or so seconds. I don't think that this is supported in English regulations, but I think that that is a mistake. I would also like to see a small PP when a call is made before the Stop card is taken away, but this happens often, so it would be inconvenient to call the director every time it happens. But the players who bid before the Stop card is removed are generally too weak to make any inferences from a break in tempo.
I know not with what weapons World War III will be fought, but World War IV will be fought with sticks and stones -- Albert Einstein