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Full Idea
Deductive logic is concerned with deductive implication, not deductive reasoning; all reasoning is inductive
Gist of Idea
All reasoning is inductive, and deduction only concerns implication
Source
Gilbert Harman (Rationality [1995], 1.4.5)
Book Ref
Harman,Gilbert: 'Reasoning Meaning and Mind' [OUP 1999], p.32
A Reaction
This may be an attempt to stipulate how the word 'reasoning' should be used in future. It is, though, a bold and interesting claim, given the reputation of induction (since Hume) of being a totally irrational process.
| 6950 | You can be rational with undetected or minor inconsistencies [Harman] |
| 6951 | Ordinary rationality is conservative, starting from where your beliefs currently are [Harman] |
| 6952 | Induction is 'defeasible', since additional information can invalidate it [Harman] |
| 6953 | All reasoning is inductive, and deduction only concerns implication [Harman] |
| 6954 | A coherent conceptual scheme contains best explanations of most of your beliefs [Harman] |
| 6955 | Enumerative induction is inference to the best explanation [Harman] |