In this age of information, we expect to have knowledge at our fingertips. If we’re looking to obtain a first impression of someone, many of us head straight to their social-media pages. If we want to understand a new topic, we don’t buy a textbook – most of the basics are waiting for us on Wikipedia. And if we want to explore a new city, we can do much of it by moving around in Google Earth. Information that was once costly or exclusive is now free to all.
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