 Further problems arise with the refinement to handle probabilistic laws. Again, some of them may be due to Lewis’s particular formulation. Elga (2004) observes that Lewis’s notion of fit is problematic in various infinite universes—think of an infinite sequence of tosses of a coin. Offhand, it seems that the particular infinite sequence that is actualized will be assigned probability zero by any plausible candidate theory that regards the probability of heads as intermediate and the trials as independent. Elga argues, moreover, that there are technical difficulties with addressing this problem with infinitesimal probabilities. However, perhaps we merely need a different understanding of ‘fit’—perhaps understood as ‘typicality’ (Elga), or perhaps one closer to that employed by statisticians with ‘chi-squared’ tests of goodness of fit (Schwarz 2014).