blackshoe, on 2012-October-19, 17:55, said:
"How many legs has a sheep?"
"Four."
This reminds me of a joke. An English mathematician, physicist and engineer were travelling together to Wales for the very first time on the train. The engineer the notices a sheep out of the window - it is black. From this he concludes: "All sheep in Wales are black." "Perhaps" says the physicist, "but all we can really say is that there is at least one black sheep in Wales." "Nonsense" says the mathematician. "We can only see half of ths sheep. Correct is to say that there is at least one sheep with at least one black side in Wales." The point is that sometimes it is enough to call a sheep black and let it stand for the matter at hand rather than creating artificial silliness. Oh yes, and the correct answer to your question is that a sheep has between 0 and 4 legs.
On a more practical note, I am reminded of many sporting events where unethical behaviour has resulted in a win for the player or team involved. Whether it be allowing a ball to hit you to get an opponent sent off, a handball on the line in the last minute of a game, falling over to win a penalty, or punching the ball into the net through divine intervention. It does not really matter whether you call this - cheating, professional, inspired. What matters is what the end result is. If you allow pausing in such situations for dubious bridge reasons then players will do this even without needing to think. Sometimes the rules of a game need to be practical if you cannot tell the difference between ethical and unethical behaviour. Yes it might be that that sheep is completely black on one side and completely white (or purple for that matter) on the other. On the other hand, practical experience tells us that sheep do not ordinarily look like characters out of Star Trek. Yes, you might allow players to pause to think in tempo-sensitive situations without penalty. On the other hand, practical experience tells us this is a bad idea and opens the door to all sorts of unethical behaviour.