I've written before about the importance of daydreaming and the so-called default, or resting state network, which seems to underlie some important features of human cognition. Instead of being shackled to our immediate surroundings and sensations, the daydreaming mind is free to engage in abstract thought and imaginative ramblings and interesting counterfactuals. As a result, we're able to envision things that don't actually exist.
Of course, this new research conflicts with the bad reputation of mind wandering. Children in school are encouraged to stop daydreaming and "focus," and wandering minds are often cited as a leading cause of traffic accidents. In a culture obsessed with efficiency, daydreaming is derided as a lazy habit or a lack of discipline, the kind of thinking we rely on when we don't really want to think.
However, in the latest edition of Mind Matters, Susan Whitfield-Gabrieli and John Gabrieli of MIT outline some interesting new research on the link between resting state activity - the performance of the brain when it's lying still in a brain scanner, doing nothing but daydreaming - and general intelligence. It turns out that cultivating an active idle mind, or teaching yourself how to daydream effectively, might actually encourage the sort of long-range neural connections that make us smart. At the very least, it's time we stop discouraging kids from staring out the classroom window, because mind wandering isn't a waste of time
