Natural Deduction

Truth tables are not consistently user-friendly, and some arguments defy their analytical power. Learn about another tec... (more)

Truth tables are not consistently user-friendly, and some arguments defy their analytical power. Learn about another technique, natural deduction proofs, which mirrors the way we think. Treat this style of proof like a game—with a playing board, a defined goal, rules, and strategies for successful play. (less)