<p>How long does it take for one-half of everything we know about a subject to be proven wrong? Depends on the subject. 45 years, for example, if that subject is cirrhosis or hepatitis. Samuel Arbesman, applied mathematician and author of "The Half-Life of Facts: Why Everything We Know Has an expiration Date", joins Julia and Massimo to talk about the hidden patterns underlying how fast our understanding of science is changing.</p>

Rationally Speaking #84 - Stephen Asma On the Myth of Universal Love

Rationally Speaking is the bi-weekly podcast of New York City Skeptics. Join host Julia Galef and guests as they explore the borderlands between reason and nonsense, likely from unlikely, and science from pseudoscience. Any topic is fair game as long as we can bring reason to bear upon it, with both a skeptical eye and a good dose of humor!
We agree with the Marquis de Condorcet, who said that in an open society we ought to devote ourselves to "the tracking down of prejudices in the hiding places where priests, the schools, the government, and all long-established institutions had gathered and protected them."Rationally Speaking was co-created with Massimo Pigliucci, is produced by Benny Pollak, and is recorded in the heart of New York City's Greenwich Village.