We’re taught that the mark of surefire intelligence is the ability to think and learn. But in his new book, “Think Again,” Adam Grant says that in our turbulent world, there’s a more important skill: the ability to rethink and unlearn. If you can learn how to revise your opinions, check your ego, and admit when you’re wrong, then you’ll be on a path toward wisdom and joy.

If you managed to stay awake during Bio 101, then you probably think you have a basic understanding of how your brain works. Not so, says neuroscientist Lisa Feldman Barrett. In this cerebral yet highly entertaining conversation with Next Big Idea Club curator Daniel Pink, Lisa says our brains are made for budgeting, not thinking. She debunks the myth of the lizard brain. And she makes the far-out claim that everything you see and hear, including this podcast, is a hallucination.