 While a multitude of apparently different solutions to the problem have been proposed, they can be classified into three main approaches, each with its own heuristic – the content approach, the consequence approach and the likeness approach. Before exploring these possible solutions to the logical problem, it could be useful to dispel a couple of common confusions, since truthlikeness should not be conflated with either epistemic probability or with vagueness. We discuss this latter notion in the  supplement Why truthlikeness is not probability or vagueness (see  also the entry on  vagueness);  as for the former, we shall discuss the difference between (expected) truthlikeness and probability when discussing the epistemological problem (§2).