Kevin's Bacon on Nostr: What is postmodern about realizing that other perspectives might give insight to how ...

What is postmodern about realizing that other perspectives might give insight to how to sharpen your own ideas or areas where there is a chance you are wrong? I thought postmodernism is all about rejection of any objective truth, which is not what I'm saying at all. Or am I mistaken, is it about acceptance of multiple ways of framing things rather than rejecting of objective truth?