In a word,Miztef wrote:well, don't the mafia have to guess what the other mafia will claim? Unless they planned this out beforehand, they basically have to guess which claim is the correct one...
oh... wait... they'll see other claims before theirs... hmmm... is it possible to do encrypted claims, so we each claim in an encrypted message, then give the decrypt key after everyone has posted their "claim"?
Maybe, but it's really not cool Ok, that was more than a word. But still.
In a non-ethics-and-cipher related point, the scum can very easily avoid all claiming the same thing by waiting to see what the other scum have claimed. Even a cipher may not work perfectly in this regard, as the thread indicates.