数据可视化之前，明确： 1.要跟谁沟通 2.希望受众了解哪些内容或者做什么 3.如何用数据表达自己的观点
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I spend plenty of time in London and it doesn't scare me, but it's a lonely place, even if you've got friends there. My job takes me all around the world, meeting lots of interesting people. But I think if I couldn't get home, if I couldn't get back to what I consider my real life I'd be frightened.
For a long time, it was believed that war was waged by armies which could not be identified with the nation itself. Professional soldiers took upon themselves the job of defending national interests, and it was understood that the war affected only them; the country itself went on living and working.