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Commens
Digital Companion to C. S. Peirce
‘Presumption [as a form of reasoning]’ (pub. 02.01.13-16:22). 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-presumption.
Term: 
Presumption [as a form of reasoning]
Quote: 

Presumption. In logic: a more or less reasonable hypothesis, supported, it may be, by circumstances amounting all but to proof, or, it may be, all but baseless.

Logical or philosophical presumption is non-deductive probable inference which involves a hypothesis. It might very advantageously replace hypothesis in the sense of something supposed to be true because of certain facts which it would account for.

Source: 
Peirce, C. S. (1902). Presumption. In J. M. Baldwin (Ed.), Dictionary of Philosophy and Psychology, Vol. II (pp. 337). London: Macmillan and Co.
References: 
CP 2.791
Date of Quote: 
1902
URL: 

http://www.commens.org/dictionary/entry/quote-presumption