 In many essays and a book, Elijah Chudnoff argues that intuitions have what he calls a “presentational phenomenology” that parallels that of perception. For him, intuitions are intellectual perceptions that sometimes reveal abstract reality in the way that sensory perceptions sometimes reveal concrete reality. So on his view, a priori justification is similar to, but significantly different from, a posteriori justification. For Chudnoff, intuitions can be evoked through imagination, reflection, and even reasoning from premises to a conclusion, but it is their nature, not their source, that is the basis of their ability to provide justification. His argument parallels an argument that says perceptions justify because they are the mental states they are, not because of their source. That is why they can provide justification in a demon world or the Matrix, even though their source is a demon or super computers and not real objects.