 Yet incompatibilists reply that the second reading cannot be what is really intended. For it renders EXT into something trivial—it is obvious that Oscar’s water thoughts metaphysically imply a number of external conditions, e.g., that Oscar was born (McKinsey, 1994; 2002; 2007, Rowlands 2003). But EXT is supposed to be more substantive than that. Compatibilists reply, however, that the thought experiments suggest that a water thought metaphysically implies some content specific environmental condition, such as the existence of water (Brueckner 1995).