“The sum of the stories and science of the brain is that they broadly reinforce the idea that ideas and innovations percolate from parts of the brain associated with more relaxed states, and then get assessed by the more intellectual or analytical parts. This notion reinforces the value of letting the brain wander, of giving it freedom to conjure from the imagination, without judging what comes up, and then allowing the more logical parts of the brain to put those ideas through the paces.

“But this brain science is still very definitely emerging. We have much to learn.

“We’re doing better with the eyes. Some of the most surprising research I learned about for this book comes from researchers studying creativity and vision.

“What people create comes from what they see. Literally.”