Time travel is metaphysically possible. Nikk Effingham contends that arguments for the impossibility of time travel are not sound. Focusing mainly on the Grandfather Paradox, Effingham explores the ramifications of taking this view, discusses issues in probability and decision theory, and considers the potential dangers of travelling in time.

• Introduction


• 1: Modes of Time Travel


• 2: The Self Visitation Paradox


• 3: The Time Discrepancy Paradox


• 4: The Double Occupancy Problem


• 5: The Bootstrapping Paradox


• 6: Changing the Past


• 7: The Grandfather Paradox


• 8: Constrict Theories


• 9: Inconsistency Theories


• 10: Incapacity Theory


• 11: Impossibility Theory


• 12: Probability


• 13: Decision Theory


• 14: The Tourist Paradox

Nikk Effingham is Reader in Philosophy at the University of Birmingham. He received his doctorate from the University of Leeds and has previously worked at the University of Glasgow. His areas of research include metaphysics, philosophy of religion, and philosophy of science. Other than time travel, he has also written papers on supersubstantivalism, composition, and perdurantism.