There ARE objective truths--but that truth is outweighed by how people FEEL about them. We will overthrow that truth (if we can) in favor of something that makes us feel better. It doesn't make the truth any less true... or the lies we choose in their stead any less false.

We get away with it because, in the majority of cases, our truth falls into the realm of the merely human, the narrative, the experiential, the illusionary and subjective good and bad.

Whereas believing that gravity holds no sway over you and you can fly will probably kill you.