“…10 See Karttunen 1974, Heim 1992. 11 Stories of this kind have been sketched, e.g., in Karttunen & Peters 1979, Soames 1982, Heim 1990, Beaver 1992, Heim 2006, van Rooij 2007, Singh 2007, von Fintel 2008 Thus, for instance, a conditional like (10) is a strange conditional, and it is hard to see why a speaker would take it for granted. It is plausible on general grounds that if a speaker is assuming that conditional, it is because she is also assuming something stronger which entails it-in this case, that John has a sister.…”