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pragmatist comments on Book Review: Computability and Logic - Less Wrong
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Comments (26)
Boolos' solution, presented without explanation. Figuring out why the solution works is itself a (much easier, but still non-trivial) logic puzzle:
Svefg dhrfgvba gb N: Qbrf qn zrna lrf vs naq bayl vs, lbh ner Gehr vs naq bayl vs O vf enaqbz?
Frpbaq dhrfgvba gur tbq (rvgure O be P) gung lbh xabj vf abg Enaqbz (svefg dhrfgvba tvirf lbh guvf vasbezngvba): Qbrf qn zrna lrf vs naq bayl vs Ebzr vf va Vgnyl?
Guveq dhrfgvba gb fnzr tbq nf frpbaq dhrfgvba: Qbrf qn zrna lrf vs naq bayl vs N vf Enaqbz?