According to the following infographic, from the Globe and Mail, the total sum of human knowledge has doubled since 2008:
I have some lingering questions, namely how does one measure the sum total of human knowledge? If two people know the same fact, does that count as an increase? Or does it have to be new information? Does every new baby learning how to walk increase the “sum total” just because there’s more babies around? Also, I now know what I got for Christmas 2009. So does everyone else (who celebrates Christmas. Does that count? Because if it does, then of course our knowledge is increasing exponentially — after all, I don’t know what I’m going to have for breakfast in the morning, but I’ll bet I figure it out by noon. New knowledge! But hardly significant.
Don’t even get me started on that market penetration starburst.
Of course, maybe I’m just being cynical. After all, the data was compiled by a computer security firm called Digital Wyzdom. That looks pretty legit.
(thanks to @nisseworks for the link!)
UPDATE: It’s not the “sum total of human knowledge” that is being measured and has doubled, but the “generation of human knowledge … [increasing] at a logarithmic scale.” That’s probably even less meaningful.