axman, on 2012-July-09, 09:09, said:
41A. Face-down Opening Lead...
You have quoted the law on correct procedure for making the opening lead, and say taht it if it doesn't conform with correct procedure it isn't a lead. However the law also anticipates leads being made not in accordance with correct procedure, and says what to do in such circumstances. That is why there are laws on leads out of turn and leads during the auction. If, by definition, these were not leads, we would not have these laws.
No, what defines a card led for these purposes, as to other reasons the card might have been exposed, is if the player who exposed the card thought he was leading to a trick. This is what distinguishes, for example, in other circumstances, cards led from cards accidentally dropped. It is how we tell the difference between a 5th card contributed to a trick and a premature lead to the next trick.