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Message: <blockquote data-quote="Eltab" data-source="post: 6800116" data-attributes="member: 6803337">1) Spock: Computer, calculate to the last digit the value of PI.Computer Virus: NNNNOOOOOooooo you can't do this to meeee... -blinks out-1a) The Grandfather Paradox is sometimes referred to as "Excedrin Headache Number (square root of (negative PI))".Calculate this number.  2)In science-fiction-author circles, the Grandfather Paradox is this:A person hates his grandfather, so he invents a time machine, goes back to when his grandfather was a little kid, and kills the child.  Now the time traveler both does exist and cannot exist.  Additionally, his grandfather both does not exist and must exist.Solve the Paradox.</blockquote>