There's a few things about the internet that are crazy: It's really only about 27 years old publicly; and there's more data added to it every 2 days than was ever created in all of humankind until 2003.

(and that was in 2010!) "Every two days... now we create as much information as we did from the dawn of civilization up until 2003, according to Schmidt. That’s something like five exabytes of data, he says."