 Ampliativity would be true if, for example, we can be justified in believing the conclusion of an inductive argument (say, that all emeralds are green) on the basis of believing its premises (say, that a properly selected group of emeralds have been observed to be green), without in addition being independently justified in believing any other proposition which, together with those premises, entails the conclusion (such as, for example, the proposition that if a properly selected sample of emeralds have all been green, then all emeralds are green).