Una discusión de la estrategia de Tim Crane contra el argumento de la Tierra Gemela

In his book Elements of mind Tim Crane has developed some resources in order to answer the Twin Earth mental experiment, invented by Hilary Putnam. The aim of this paper is to demonstrate that Crane’s strategy is ineffective because he misunderstands that argument. We intend to examine in detail the reconstruction of the argument that Crane offers to detect its problems. A tighter version of it is also proposed, more consistent with Putnam intentions.