In order to include evolved parameters in our model, we included the relatively natural assumptions of dynamic group sizes and stochastic birth-death processes in populations with multiple groups , as opposed to the fixed group sizes and regularized birth-death processes in simulations with only one or two groups as assumed in earlier models [21–25]. However, since we change the learning context and population level assumptions, and now include evolved parameters, we will be unable to pinpoint the exact cause of any differences in the results we find relative to earlier models. Nevertheless, despite these limitations, our approach is particularly suitable to assess whether simple SLMs are sufficient to generate traditions and cumulative cultural change in the context of skill learning.