Changes

[[Image:lighterstill.jpg]]

[[Image:lighterstill.jpg]]

[[Image:Abinitio_1.jpg|left|"abinitio"]]

[[Image:Abinitio_1.jpg|right|"abinitio"]]

'''Logic''' (from [[Ancient Greek|Classical Greek]] λόγος [[logos]]; meaning word, thought, idea, argument, account, reason, or principle) is the study of the principles and criteria of valid [[inference]] and [[demonstration (proof)|demonstration]].

'''Logic''' (from [[Ancient Greek|Classical Greek]] λόγος [[logos]]; meaning word, thought, idea, argument, account, reason, or principle) is the study of the principles and criteria of valid [[inference]] and [[demonstration (proof)|demonstration]].