 The mapping theory faces a number of difficulties. (1) As Fodor notes, on the mapping view narrow content seems to be ineffable. We would like to be able to say what the narrow content of a particular thought or belief is, but on Fodor’s view this cannot be done. To express a narrow content we would presumably need to find an English expression that is synonymous with it. But the content of English expressions is broad, not narrow, so this seems to be impossible.