This document compares and contrasts idealism and realism. It discusses: 1) Idealism, established by Plato, asserts that matter does not exist and reality consists exclusively of ideas constructed by the human mind. 2) Realism, established by Aristotle, claims that objects outside the mind have independent existence regardless of human perception. 3) The document argues against idealism by claiming that if an idealist philosopher was falling from a plane without a parachute fastened, they would have to acknowledge physical reality to survive, and that Darwin's theory of evolution shows reality existed before the human mind evolved to contemplate it.