In this Radiolab podcast we are told the story of Ildefonso, a grown deaf man who has never had language. Susan Schaller describes teaching Ildefonso and bringing him into the world of communication. For the rest of the show, hosts Jad Abumrad and Robert Krulwich take us through a sequence of explorations of how humans use language to organize ourselves. Radiolab is a podcast that should be listened to religiously by anyone who is interested in the craft of storytelling. Other favorite episodes are Placebo, Numbers, and Stochasticity.