Reasoning involves using more-or-less rational processes of thinking and cognition to extrapolate from one's existing knowledge to generate new knowledge, and involves the use of one's intellect. The field of logic studies the ways in which humans can use formal reasoning to produce logically valid arguments and true conclusions. [5]
reasoning (ˈriːzənɪŋ) n 1. the act or process of drawing conclusions from facts, evidence, etc 2. the arguments, proofs, etc, so adduced