What are Words Worth?

How do words shape our minds?  Do the French suffer because they have no word for berry or cozy?  Do we suffer because we have no word for schadenfreude?  Why do we adopt new words, or give old words new meaning?  Can we eliminate a concept by renaming it, or eliminating the word for it?  Ken and John welcome back Geoff Nunberg, author of The Years of Talking Dangerously, for a program recorded in front of a live audience at the Marsh theatre in San Francisco.