Why people or daydreaming?

Our minds often go wandering when do the boring work. That's because dreaming is a normal state of the brain, not a useless distraction.
"Most psychologists believe that we spent much time thinking on purpose and sometimes instant, we were thinking not about interfering," head researcher Malia Mason at the University Harvard, USA, said. "But actually the opposite. Most of the time we run under the direction and thinking the situation was interrupted by the time to think with purpose."