If, on the other hand, we interpret pk as degree of adequacy or acceptability, then the principle of inference mentioned the 'rule of absolution' (which, on this interpretation, becomes a typical example of a 'principle of induction') is simply false, and therefore clearly non analytic. 'probable', then we need a new appraisal: an appraisal of the appraisal, as it were, and therefore an appraisal on a higher level.