The Commens Dictionary
Quote from ‘Logic: Fragments [R]’
There are three stages of inquiry, demanding as many different kinds of reasoning governed by different principles. They are,
1, Retroduction, forming an explanatory hypothesis[;]
2, Deduction, tracing out the consequences that would ensue upon the truth or falsity of that hypothesis; and
3, Induction, the experimental testing of the hypothesis by inquiring whether its consequences are born out by fact, or not.
MS [R] S64
‘Deduction’ (pub. 26.08.15-23:24). Quote in M. Bergman & S. Paavola (Eds.), The Commens Dictionary: Peirce's Terms in His Own Words. New Edition. Retrieved from http://www.commens.org/dictionary/entry/quote-logic-fragments-r-0.