The confirmatory form of the probabilistic argument is more modest; it aims to show that there is a considerable contribution to the argument for \(M\) arising from the facts indicated (McGrew and McGrew 2009). It has been objected (Oppy 2006: 5–6) that probabilistic arguments of this sort are of no interest unless they are founded on all of the relevant available evidence. But this objection would, if legitimate, count equally against the use of arguments from comparison of likelihoods in scien