 There are three main problems for any concrete proposal within the likeness approach. The first concerns an account of likeness between states of affairs – in what does this consist and how can it be analyzed or defined? The second concerns the dependence of the truthlikeness of a proposition on the likeness of worlds in its range to the actual world: what is the correct function? (This can be called “the extension problem”.) And finally, there is the famous problem of “translation variance” or “framework dependence” of judgements of likeness and of truthlikeness. This last problem will be taken up in §1.4.3.