A lot is said about #truth these days, because it's often thought that we live in a post-truth world where facts don't matter. But if you say to somebody ‘That's not true!’ then that means something to most people. Because most people care about the truth and they care about being seen as truthful. But the problem is an ancient one, and it's when Pontius Pilate turns to Jesus and says, ‘What is truth?’ #Jesus voices no answer, but many philosophers have. One of the most common answers is known a