Definition - 1. A statement conveying fundamental character. 2. A statement, or a concise explanation, of the meaning of a word, phrase, term, object or symbol Proof - 1. The evidence or argument that compels the mind to accept an assertion as true. 2. a. The validation of a proposition by application of specified rules, as of induction or deduction, to assumptions, axioms, and sequentially derived conclusions. b. A statement or argument used in such a validation. 3. a. Convincing or persuasive demonstration: was asked for proof of his identity; an employment history that was proof of her dependability. b. The state of being convinced or persuaded by consideration of evidence. 4. Determination of the quality of something by testing; trial: put one's beliefs to the proof. 5. Law. The result or effect of evidence; the establishment or denial of a fact by evidence. Convention - 1. General agreement on or acceptance of certain meaning (see definition), practices or attitudes ==================================== It would seem that definitions are beyond proof. Does the statement - Prove 1 = 1 - make sense? ==================================== scientific method: The principles and empirical processes of discovery and demonstration considered characteristic of or necessary for scientific investigation, generally involving the observation of phenomena, the formulation of a hypothesis concerning the phenomena, experimentation to demonstrate the truth or falseness of the hypothesis, and a conclusion that validates or modifies the hypothesis. ------------------------------------------- I thought this might be useful after reading some threads on proving things that are or seem to be beyond proof.