about 6 billion (74% of world)
About how many internet users are there worldwide today?
Roughly three out of every four people on Earth are now online.
Source: Wikipedia - Global Internet usage (2025) en.wikipedia.org
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IDC estimated global data volume grew from 4.4 zettabytes in 2013 to about how much by 2020?

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about 6 billion (74% of world)
Roughly three out of every four people on Earth are now online.
Source: Wikipedia - Global Internet usage (2025) en.wikipedia.org
about 2.5 exabytes per day
An exabyte is a billion gigabytes — this was the daily pace of data creation over a decade ago.
Source: Wikipedia - Big data (2012) en.wikipedia.org
1969
The first transmission, between UCLA and Stanford, was meant to spell 'login' but crashed after just two letters, 'lo'.
Source: Wikipedia - ARPANET (2024) en.wikipedia.org
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Each question asks you to guess a real number about digital data and how much of it exists. After you answer you see how everyone else guessed, then the real figure and where it comes from.
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