博文
Dogs don't eat your homework, but computers will!
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Everyone knows this story of a little schoolboy telling his teacher that his dog ate his homework.
Well, a friend of mine accidentally cleaned away a ready-to-submit book chapter a few weeks ago. She had to "re-write" it. Today, a high school senior lost lots of his writing due to the crash of his school computer.
Back up all you cannot afford to lose, now and often!
https://blog.sciencenet.cn/blog-306792-393324.html
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