wedrifid comments on The Graviton as Aether - Less Wrong

13 Post author: alyssavance 04 March 2010 10:13PM

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Comment author: wedrifid 05 March 2010 12:18:20PM *  1 point [-]

Is there a single example of this that you can think of?

No, it's just a theoretical property of the 'A, B, X' abstraction that you mention. In fact, it would not surprise me if the general problem of proving whether or not two theories are exactly equivalent is intractable in a similar way to the halting problem.