 Challenging the inductive credentials of PI has acquired a life of its own. A standard objection (cf. Mizrahi 2013) is that theories are not uniform enough to allow an inductive generalization of the form “seen one, seen them all”. That is, theories are diverse enough over time, structure and content not to allow us to take a few of them—not picked randomly—as representative of all and to project the characteristics shared by those picked to all theories in general. In particular, the list that Laudan produced is not a random sample of theories. They are all before the twentieth century and all have been chosen solely on the basis that they had had some successes (irrespective of how robust these successes were). An argument of the form: