Today’s bad idea is a theory of the universe: David talks to astrophysicist Chris Lintott about Steady State Theory, the rival cosmological model to the Big Bang, which held its own for a while in the 1940s and 1950s but turned out to be unsustainable. Why did its best-known champion Fred Hoyle have so much faith in it? What did it expose about the limitations of Big Bang theory? And what does it reveal about scientific hubris and human weakness in the face of the unknown?Available now is a new bonus bad idea to accompany this series: David talks to Lucia Rubinelli about what’s gone wrong with the idea of sovereignty. To get this and all our bonus episodes plus ad-free listening sign up to PPF+ https://www.ppfideas.com/join-ppf-plusNext Bad Idea: Party Members Choosing LeadersPast Present Future is part of the Airwave Podcast Network Learn more about your ad choices. Visit podcastchoices.com/adchoices