Read the alternative perspective on the existence of objective truth from post-realist philosopher Hilary Lawson here.
I have been a professional teacher of philosophy now for 60 years. One persistent philosophical confusion I have discovered is the temptation among intelligent undergraduates to adopt a conception of relativism about truth. It’s not easy to get a clear statement of relativism, but the general idea is something like this: there is no such thing as objective truth. All truth statements are made from a perspective and the perspective is inherently subjective and the result is that truth is always relative to the interests of the truth-staters. So what is true for me is true for me, and what is true for you is true for you. Each of us has a right to our own truth.
Part of the appeal of this view is that is seems both empowering and democratic. It is empowering because I get to decide what is true for me, and democratic because everybody else has the right to decide what is true for them.
I think this view cannot be stated coherently, and what I want to do is to expose its incoherence.