In Mind and World, John McDowell tries to provide a picture in which our experiences give "rational", rather than merely causal, constraints on our thinking. This was to avoid both Myth of the Given, which can give us only exculpation rather than justification, and unconstrained coherentism, which sounds idealistic. This picture can be understood as a form of "internal realism", and I have a great sympathy with this ambitious project. But I find some tension among his several theses, which in turn brings about two interconnected problems. I will give my own solution to them, in terms of the notion of ignorance. Then I will depict some consequences, both positive and negative, of that modification.
