Are you done learning?

On the final episode of Top Chef, one of the contestants was using an innovative cooking technique. Renowned French chef and co-owner of the three-star restaurant Le Bernardin, Eric Ripert, having been enlisted as sous chef to another contestant, went over to observe more closely. He said,

"As a chef, the day you don't learn any more, it means you're so egomaniac you're blind."

When's the last time you learned something new in your field?

Or do you think you already know everything you need to know?