 The Lockean thesis, however, is itself in need of justification. Fortunately, though, nothing so strong as the Lockean thesis is needed to defend  premise (2).  For one thing, all the defender of (2) needs is an “if”, not an “if and only if”. Also, the defender of (2) need not equate, as the Lockean thesis does, the attitude of belief with having a high credence. Thus, all that is required is the following more modest thesis (call it “T”):