skaeran, on Oct 10 2009, 08:01 AM, said:
L7C clearly says that you should shuffle your hand before you return it to the board. Shuffling is more or less the opposite of sorting (I'm aware that shuffling a hand could result in it being sorted into suits, but what's the odds of that happening???).
A back-of-an-envelope calculation gives the odds as roughly 0.006%. This accords with personal experience - if you play, as I have, an average of three sessions a week with 24 boards a session for 50 weeks of the year, it ought to happen to you about six times in the course of thirty years.
Law 7C is indeed clear - you must shuffle your hand before returning it to the board. This may have been introduced in order to prevent a manoeuvre that certain teams were said to operate, although I have not seen any direct evidence. The notion was that if your opponents could make a slam, you sorted your cards before returning them to the board. When your team-mates observed that their opponents did not sort their cards after removing them from the board at the other table, they would bid the slam.