Question: The Platonia Dilemma was introduced in the book "Metamagical Themas" which was written by an author born in what year?
Sentence (from "Platonia dilemma"): In the platonia dilemma introduced in Douglas Hofstadter's book "Metamagical Themas", an eccentric trillionaire gathers 20 people together, and tells them that if one and only one of them sends him a telegram (reverse charges) by noon the next day, that person will receive a billion dollars.
Relevant evidence: Yes