By 2020, about 1.7 megabytes of new information will be created every second for every human being on the planet, according to the annual IDC Digital Universe study. At that point, the world will be looking at digital knowledge in the neighborhood of 44 zettabytes, or 44 trillion gigabytes, up from just 4.4 zettabytes today. (While the sheer scale of this expanding universe is impressive, it’s worth recalling that we sent astronauts to the moon and back using computers with only 2 kilobytes of RAM.)
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