Deduction

Deduction, in Logic, as opposed to Induction (q.v.), is the method of reasoning from generals to particulars, as the latter is from particulars to generals. Induction is the mode by which all the materials of knowledge are brought to the mind and analysed; Deduction, the process by which the knowledge thus acquired is utilised, and by which new and more complicated inductions are rendered possible. Thus every step in a deduction is also an induction. See INDUCTION, LOGIC.