PHLA10H3 Study Guide - Final Guide: Possible World, Omnibenevolence, Omnipotence
Document Summary
5 arguments: motion, causality, necessity & contingency, properties come in degrees, design. Got idea from aristotle"s physics: if an object continues to move, its motion must be sustained by a force that keeps it in motion. If you remove the force, the object stops moving. Proven to be false newton: an object remains in constant uniform motion (rest) unless acted on by a force. Aquinas and aristotle thought that motion requires a force, but newton showed that it was acceleration that required a force. Why can"t nature be indefinitely old: the cause/effect chains cannot extend indefinitely far into the past, modern physics views the universe as finitely old. Necessary: must exist in all possible worlds, no matter what, doesn"t depends for its existence on anything (ex. that aquinas uses: god) Contingent: exists in some but not all possible world. (ex. yourself), depends for existence on something happening. Possible worlds determine what is necessary and what is contingent.
