This sort of relativist approach only makes sense if you assume both people are right, wrong, or lying. If one of them sees things how they are and the other do

This sort of relativist approach only makes sense if you assume both people are right, wrong, or lying. If one of them sees things how they are and the other does not, then "synergy" isn't going to get anyone anywhere. Also, you should be "respectful" by entertaining the possibility that what OP is saying is true.