In a paper by Bower et al. (2010) I have recently explored the problem of constraining the parameters of a complex model of galaxy formation in a high dimensional
(16-D!) space, using emulator techniques that are gaining popularity in statistical studies. Applied to the Galform semi-analytic model of galaxy formation this allows us to find a parameter set which
results in a good match to a variety of observational data on galaxies. From there, we can use the model to make robust
predictions about as yet unexplored regimes in the Universe.