The Digital Age Begins When Total Digital Storage Capacity Overtakes Total Analog Capacity

According to Martin Hilbert and Priscilla López in their paper "The World's Technological Capacity to Store, Communicate, and Compute Information," Science 332 (April 1, 2011) 60-64, the year 2002 could be considered the beginning of the "digital age"— the first year worldwide digital storage capacity overtook total analog capacity.