Did you ever wonder, when you were a kid, whether your inane "summer camp" actually had some kind of elaborate hidden purpose—say, it was all a science experiment and the "camp counselors" were reall…
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The MIT Open Learning Library is home to selected educational content from MIT OpenCourseWare and [MITx courses](https://www.edx.org/school/mitx), available for free to anyone in the world at any time.