Today was almost all administration, but I did have a great email conversation with Iain Murray about the Comet Holmes project. I was saying that Lang and I are getting biased answers, and his response was: If your model is good, the posterior PDF pretty-much has to include the right answer. That is, you can be biased, but Bayes never confidently rules out the truth. I have many things to say about that, but the blogosphere doesn't have room for it all! He said: Go hierarchical. I said: Argh! (because he is right).