DanielVarga comments on Harry Potter and the Methods of Rationality discussion thread, part 7 - Less Wrong

7 Post author: Unnamed 14 January 2011 06:49AM

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Comment author: David_Gerard 25 January 2011 09:50:44AM *  5 points [-]

A question on transfiguration, timeless physics and what HJPEV could have known:

Harry's first year at Hogwarts is 1991. He transfigurates materials outside the confines of forms by thinking in terms of timeless quantum physics.

What was the state of timeless physics in 1991? Barbour's book was not published until 1999, for example, though presumably to have a book there was work leading up to it. What knowledge on the subject could Harry have had at that time, in a world without the Web as we know it, without even arXiv?

Edit: Barbour started publishing papers on the subject in 1982. How did Harry find out about these, and understand them sufficiently to think of the universe as really timeless?

Comment author: DanielVarga 27 January 2011 01:17:18AM 5 points [-]

Slightly offtopic: Is Barbour becoming the "public face of timeless physics"? All right. But let's not believe it is because of scientific priority. The Wheeler–DeWitt equation is from 1967. Huw Price's book was published in 1996.

Comment author: David_Gerard 01 February 2011 08:58:33PM -1 points [-]

Certainly the LessWrong face of it, per the QM sequence.