What If?: Thought Experimentation in Philosophy

Thought experimentation has been a staple of philosophical methodology since classical antiquity, when Xenophanes of Colophon speculated that if horses had gods, they would be equine in form. Nicholas Rescher's What If? undertakes a systematic survey of the role and utility of thought experiments in philosophy. After surveying the historical issues, Rescher examines the principles involved, and explains the conditions under which thought experimentation can validly yield instructive results...