CHAPTER 5
Why a Picture is Worth a Thousand Words
It’s your first visit to Washington, D.C. Arriving in the capital of the United States, you’re excited to visit all the monuments and museums, see the White House, and scale the Washington Monument. To get from one place to another, you need to take the local public transit system, the Metro. That seems easy enough. There’s just one problem: you don’t have a map.1
Instead of a map, imagine that the person in the information booth hands you an alphabetized list of stations, train line names, and geographic coordinates. In theory, you have all the information you need to navigate the D.C. metro. But in reality, figuring out which line to take and where to get on ...
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