Being subject to "mind-wandering", that is to say being a little in the moonlight during a working day, can be good for your work. During these moments of attention drift, thoughts float aimlessly, associating ideas in unstable ways and sometimes lacking any apparent logic.
This state can be either spontaneous, as when you read without understanding, or intentional, when you mentally plan your vacation instead of concentrating on a task to complete or your boss's speech during a meeting, says Franck Biétry, university professor in human resources management at the University of Caen Normandy.