Fadely came in for the day; we discussed how to put objective priors on fluxes and redshifts for galaxies in our hierarchical star–galaxy separation project. In the end we decided to make the prior separable for now. We know this to be wrong, but we want to see if it becomes a dominant problem. in my view, all models are wrong; the only question is whether they are wrong in ways that make your conclusions unreliable! Fortunately, this is an empirical question; we shall see.
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