I need some clarifications regarding the statements of Dave and Fran, because their interpretation can be flexible.
For example if Dave is lying it means Alder lies sometimes, do we interpret that as he is lying if Dave is lying? Basically what I'm saying is if Alder is telling the truth Dave could be both lying and not lying with the information we have.
Similarly with Fran. The use of "if" means she can be right or wrong but not be lying. Say if Paul is one of the killers can we say that Fran is telling the truth?
Just having a little trouble because I have 4 alternate solutions. (2 different pair of killers with 2 alternate bribe distributions each) caused by the uncertainty in Dave and Fran.