Syllogism—1. A general rule. 2. A fact contained under that rule. 3. A conclusion that the fact is so contained.—an argument stated regularly and at full length.—a valid argument so stated that its conclusiveness is evident from the mere form of the expression.

Technical Terms—the tools of art.—Whately.

Technical Language—regularly formed, defined, and agreed on set of expressions.

Testimony—second-hand experience. Direct evidence is that which is professedly given. Incidental, is corroboration casually introduced on one subject in the course of an evidence delivered on another.

Theory—is a system of rules intended to explain a class of facts. The rules should be precise, and rest on a rigorous induction of facts or probabilities.

Tradition—the relation of a circumstance, not committed to writing by any person who observed it, but communicated orally from one to another for a long period of time.