 Fictionalists have developed two different kinds of responses to this argument. The first one, due to Field (1980, 2016), can be called the nominalization response, and the version of fictionalism it gives us can be called hard-road fictionalism. The second response, developed by Balaguer (1996a, 1998a), Melia (2000), Rosen (2001), Yablo (2005), Bueno (2009), and Leng (2010), can be called the no-nominalization response, and the version of fictionalism it gives us can be called easy-road fictionalism, or weasel fictionalism. Moreover, (The names here are due to Colyvan and Melia; the former speaks of ‘hard-road nominalism’ and ‘easy-road nominalism’, and the latter speaks of ‘weasel nominalism’.)