We need both blue-sky speculation and hard nosed planning

Alison Gopnik, Professor of psychology at Berkeley, author of "The Philosophical Baby" on the differences between minds that explore and exploit.

She makes the point that: "Each kind of intelligence has benefits and drawbacks. Focus and planning get you to your goal more quickly, but may also lock in what you already know, closing you off to alternative possibilities."

Thank you Alison. We take note.