 Language Learning. Learning a language would be problematic, since it seems as if one couldn’t learn any part of a given language until one had mastered all of it. (Dummett 1973: 597–600, 1976: 44, 1991: 221, see also Bilgrami 1986, Dresner 2002, Jönsson 2014) Of course, one could argue that on this holistic view, there are no “languages” to learn, just a series of changing idiolects, and at any point in one’s acquisition period, one would have mastered some idiolect. However, this in turn leads to the following problem.