Abstract
Ayn Rand and Immanuel Kant had profound disagreements, not just about the possible scope of knowledge, but (more importantly) about the possible scope of philosophy, especially metaphysics. This paper explores those disagreements, steel-manning both sides. My conclusion is that 1) both thinkers have worthwhile points to make, yet 2) Rand is guilty of poor scholarship while 3) Kant is guilty of appeal to ignorance. Despite the fallacious nature of (3), I stress that ignorance is not by itself something that philosophers committed to objectivity should panic about.