What exactly is 'day dreaming'? The author seems to make up his own definition for it, interpreting it to include activities such as reading Wikipedia and watch

What exactly is 'day dreaming'? The author seems to make up his own definition for it, interpreting it to include activities such as reading Wikipedia and watching YouTube videos. Personally, I find many of the tasks he mentioned too interactive to allow my mind to wander while doing them. (I'm actually trying to learn something when I read a Wikipedia article.) I think I'll stick to three-hour walks.