    Sentence 1: Peter Lyman and Hal Varian  of Berkeley ‘s School of Information  Management and Systems say that  information production has increased by  30 percent each year between 1999 and  2002.    Sentence 2: That task appealed to two  masters of the megabyte , Peter Lyman  and Hal Varian , professors at the  University of California-Berkeley 's  School of Information Management  and Systems.