If, however, this sort of hidden deduction did not exist,...

If, however, this sort of hidden deduction did not exist, there could be no form of inference at all, no matter how speculative. The hidden deduction of analogy is this: this judgment is true for one of the similar objects, and every judgment which is true of one of a pair of similar objects is also true of the other. It is to be noted that the major premise of this deduction is not certain.

In incomplete induction there is a similar speculative deduction, that is, there is a suppressed major premise in it such as: “Every judgment which is proved for many individuals of a whatness is proven for all the individuals of that…