Wherein the world...?

摘要

Do you know where you are? You are no doubt aware of who and what is immediately next to you. You may also be able to peer further, to a street name, a river or a skyscraper looming above rooftops. Chances are, then, that you could find your location on a map. Without maps, our mental picture of our place in the world would be utterly different. Before printed maps became widespread, humans had a much narrower idea of their true surroundings, based instead on memory or verbal descriptions.