A recent edition of the AIMS newsletter to which I am subscribed offers this choice morsel:
Is too much information bad for your brain? A study commissioned by Hewlett-Packard cautions that data overload gives rise to a condition called "infomania," in which a worker deluged with information experiences diminished concentration. Tests demonstrated that office workers inundated with phone calls, e-mail and other data inputs suffer a higher effective loss of IQ than marijuana smokers.
I can identify with that.