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J.K. Rowling will be making money off of the Harry Potter books until the 23rd-century thanks to the twisted history of intellectual property law in the United States. Unfamiliar with how and why copyrights are valid for so long? Self-described "time management coach" Colin Grey explains the entire history of intellectual property law in the United States in less than seven minutes, and his critical take is fascinating.

This article is from the archive of our partner The Wire.