My old friend Protagoras said that "the human being is the measure of all things, of things that are, that they are, and of things that are not, that they are not". He was a relativist and thought that every individual's points of view are true. Well, I examined his view and found it to be self contradictory.
Alas, it looks like relativism persists to this day.
This article expresses a concern about the rise of relativism:
O'Neill Skllful Faking