 Metaphors are often difficult to interpret. Suppose a commentator says “Iraq was Bush’s Vietnam”, referring to George W. Bush and the second Gulf War. Did she mean that the U.S. lost in Iraq the way it lost in Vietnam? That the reasons for going to war in Iraq were as misguided as those that got the U.S. into Vietnam? Or did she perhaps mean that even though the U.S. did not secure all its objectives, the Iraq war was still worth fighting? She could mean and believe any of these things and still be making a useful contribution. Lepore &amp; Stone (2015: Ch. 10) describe such metaphors as inviting hearers to imagine all the things the speaker might have meant. Grice (1975: 39–40) himself acknowledged such cases when he said that 