 We get different versions of the Innate Knowledge thesis by substituting different subject areas for the variable ‘S’. The more subjects included within the range of the thesis or the more controversial the claim to have knowledge in them, the more radical the form of rationalism. Stronger and weaker understandings of warrant yield stronger and weaker versions of the thesis as well. Empiricists reject this thesis: Locke, for instance, dedicates the whole first book of the Essay to show that such knowlege, even if it existed, would be of little use to us.