The appropriate likelihood comparison under this approach is not Sober's OSE (which includes 'We exist' as background) but rather alternative likelihood ratios that do not presuppose our existence
An advantage of approaching the argument from fine-tuning for design using the ur-probability solution is that it offers proponents of the argument a clear-cut rejection of the anthropic objection: as in Kotzen’s (2012) approach, the fact that we exist is treated not as background knowledge but as evidence taken into account by Bayesian conditioning. The appropriate comparison between likelihoods to consider is thus not Sober’s \(\eqref{ose}\)—at least not under Sober’s own interpretation of “OS