Contemporary experimental philosophers sometimes use versions of an argument from the history of philosophy to defend the claim that what they do is philosophy. Although experimental philosophers conduct surveys and carry out what appear to be experiments in psychology, making them methodologically different from most analytic philosophers working today, techniques like theirs were not out of the ordinary in the philosophy of the past, early modern philosophy in particular. Or so some of them (Knobe, Nichols, Systma and Livengood) argue. This paper disputes the argument, citing important differences between early modern philosopher-scientists – Descartes, Hobbes and Boyle – and their supposed modern counterparts. Although there is some cont...