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The realities of mankind's cognitive situation are such that our knowledge of the world's ways is bound to be imperfect. None the less, the theory of unknowability – agnoseology as some have called it – is a rather underdeveloped branch of philosophy. In this philosophically rich and groundbreaking work, Nicholas Rescher aims to remedy this. As the heart of the discussion is an examination of what Rescher identifies as the four prime reasons for the impracticability of cognitive access to certain facts about the world: developmental inpredictability, verificational surdity, ontological detail, and predicative vagrancy. Rescher provides a detailed and illuminating account of the role of each of these factors in limiting human knowledge, giving us an overall picture of the practical and theoretical limits to our capacity to know our world.
Chapter 1 Preface
Chapter 2 Unknowable Facts
Chapter 3 Future Knowledge and its Problems
Chapter 4 Problems of Alien Cognition
Chapter 5 Against Insolubilia
Chapter 6 More Facts Than Truths
Chapter 7 On Predicate Vagrancy and its Epistemic Basis
Chapter 8 An Application to Paradoxology: Vagueness
Chapter 9 Metaphysical Ramifications
Chapter 10 Apprendix: On the Formal Logic of Unknowability
Nicholas Rescher is professor of philosophy at the University of Pittsburgh.