I never disagreed with the equation (of course it's correct). My point is that the prior always comes first, even in UII. You're not simply picking the hypothesis that best explains the data (assuming by best explains you mean has the greatest likelihood P(O|T)), otherwise you just end up with the hypothesis containing a lookup table of all previous data. You need to take into account your confidence in the hypothesis before the data arrived (e.g. based on the complexity/size of programs expressing that hypothesis for UII).