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Harry Potter and the Methods of Rationality

Harry Potter and the Methods of Rationality is a fan fiction Harry Potter story in which Harry's Aunt Petunia married a scientist, allowing Harry to enter “the wizarding world armed with Enlightenment ideals and the experimental spirit. It is written by Eliezer Yudkowsky, an AI researcher and decision theorist at the Singularity Institute for Artificial Intelligence.

Harry Potter and the Methods of Rationality is a work of alternate-universe Harry Potter fan-fiction wherein Petunia Evans has married an Oxford biochemistry professor and young genius Harry grows up fascinated by science and science fiction. When he finds out that he is a wizard, he tries to apply scientific principles to his study of magic, with sometimes surprising results.1)