David Chandler has a couple of excellent essays that visually demonstrate a couple of important points.

What Happened in the Jenin Refugee Camp?

Abstract: Aerial photographs were posted on the Israel Defenses Forces web site as evidence that the destruction in the Jenin refugee camp was on a small scale, incompatible with claims that there was a massacre. However, measurement of the area of destruction shown in the same photographs, compared with the population density of the camp, actually lends credibility to claims by Palestinians (and many international observers) that hundreds of people were killed.
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thanks to Cursor

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The L-Curve

Through teaching introductory astronomy over the years I have come to realize that most people cannot distinguish the relative sizes of millions and billions.

Big numbers aren't just for astronomers. If you can't understand big numbers you can't understand the economy and you will be at the mercy of propaganda mills when you walk into the voting booth.
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