Researchers are unraveling the complexities of the brain and the latest findings show that with no specific task at hand we simply daydream. Not that all the thoughts are of a dream date with McDreamy, they are a little more like "to do" lists. That is why the scientists have labeled this thinking pattern "stimulus-independent thought." How very dry.
So write your "to do" list down so you can spend your daydream time on other more fanciful things.