 The alternative is that knowledge requires reasons that make the belief very likely true, but needn’t guarantee it. This is the weak conception of knowledge. Most epistemologists accept the weak conception of knowledge. But BonJour asks a challenging question: what is the “magic” level of probability required by knowledge? BonJour then argues that a satisfactory answer to this question isn’t forthcoming. For any point short of 1 would seem arbitrary. Why should we pick that point exactly? The same could be said for a vague range that includes points short of 1—why, exactly, should the vague range extend roughly that far but not further? This leads to an even deeper problem for the weak conception. It brings into doubt the value of knowledge. Can knowledge really be valuable if it is arbitrarily defined?