Science Friday: How Do Inventors Invent?

Ira Flatow has an interesting-looking segment in the first hour of tomorrow’s Christmas Eve edition of NPR’s Science Friday:

How do great inventors invent? Is there something that separates the mental processes of a creative inventor from the rest of us? In this hour of Science Friday, we’ll talk about the brains behind great inventions, from physical things like the kidney dialysis machine, to innovative businesses like the online payment service PayPal. We’ll talk with author Evan Schwartz, author of a new book on the inventing process, and with Nick Holonyak, inventor of the first light-emitting diodes (among other things.)