If Truth is so valuable, why is there so much BS?

Everywhere we look — in the media, in our political campaigns, in the hallowed halls of the academy — we are confronted with an endless stream of BS, spin, propaganda, half-truths, and even outright lies.  Yet for centuries, philosophers have argued that the pursuit of truth is both intrinsically good and instrumentally useful.  But if truth is really both good and useful, then why is there so much BS around?  John and Ken welcome Harry Frankfurt, author of On Bullshit and On Truth, to discuss the relative value and utility of Truth and its alternatives.