In an era of post-truth politics, credibility is like a rainbow | Grist: But there are no referees any more, no members of the elite who transcend the partisan war and are respected by both sides. Or at least very few. There are only the sides and their respective worlds. Conservative credibility can only come from the conservative side, and if conservatives refuse to grant it, it doesn’t exist, any more than a rainbow exists when no one’s looking at it.