Odds are, if 4-6 people can't figure out an answer you thought was obvious, you screwed up, not them. - JeffGroves
Which is why a DM should present problems to solve, not solutions to find. -FlatFoot
A game is a fictional construct created for the sake of the players, not the other way around. If you have a question "How do I keep X from happening at my table," and you feel that the out-of-game answer "Talk the the other people at your table" won't help, then the in-game answers "Remove mechanics A, B, and/or C, add mechanics L, M, and/or N" will not help either.