Jonah Lehrer writes in Imagine: How Creativity Works (p. 135):

“Knowledge can be a subtle curse. When we learn about the world, we also learn all the reasons why the world can not be changed.

We get used to our failures and imperfections. We become numb to the possibilities of something new. In fact, the only way to remain creative over time — to not be undone by our expertise — is to experiment with ignorance, to stare at things we don’t fully understand.

This is the lesson of Samuel Taylor Coleridge, the nineteenth-century Romantic poet. One of his favorite pastimes was attending public chemistry lectures in London, watching eminent scientists set elements on fire. When Coleridge was asked why he spent so much time watching these pyrotechnic demonstrations, he had a ready reply.

‘I attend the lectures,’ Coleridge said, ‘so that I can renew my stock of metaphors.’ He knew that we see most when we are on the outside looking in.”