In our daily life, we perform many actions without complete cognitive control. You may drive the car while lost deep in thought and later exclaim that you can’t recall the route you traveled. Or you have the nagging feeling that you have forgotten to lock the door but after checking you discover that you had indeed locked it. The German mathematician David Hilbert(1862-1943) was so absent-minded that once he went to the bedroom to change clothes for an evening dinner, but instead ended up going directly to sleep. This article examines the basis of such phenomena from the standpoint of cognitive psychology, neuroscience and integral psychology.