Exploring the biggest questions of our time with the help of the world's greatest thinkers. Host Manoush Zomorodi inspires us to learn more about the world, our communities, and most importantly, ourselves.Get more brainy miscellany with TED Radio Hour+. Your subscription supports the show and unlocks a sponsor-free feed. Learn more at plus.npr.org/ted
https://www.npr.org/podcasts/510298/ted-radio-hour
#564: The Signature
The signature. We put it on checks, contracts, credit cards. It's supposed to say, "This is me." But where did the idea come from? And why are we still using it? We consult a rabbi, a lawyer and a credit card executive.