# How do abduction and induction relate?

1. Is abduction a species of induction? Can we abduce what we could never know by induction?

2. And has anyone tried to enumerate what we can know by induction?

• Deduction, Induction and Abduction on Wikipedia
– user2953
Commented Jan 15, 2015 at 12:45
• that's not going to tell me anything new, i'm not asking how to define the terms, but if abdution reduces to induction
– user6917
Commented Jan 15, 2015 at 19:09
• You're question whether abduction is a specie of induction can be answered by carefully reading that paragraph.
– user2953
Commented Jan 15, 2015 at 19:37
• ok answer the question if you can / like mahn :) ?
– user6917
Commented Jan 17, 2015 at 4:21

See Abduction :

The term “abduction” was coined by Charles Sanders Peirce in his work on the logic of science. He introduced it to denote a type of non-deductive inference that was different from the already familiar inductive type.

[...]

the best way to distinguish between induction and abduction is this: both are ampliative, meaning that the conclusion goes beyond what is (logically) contained in the premises (which is why they are non-necessary inferences), but in abduction there is an implicit or explicit appeal to explanatory considerations, whereas in induction there is not; in induction, there is only an appeal to observed frequencies or statistics.

• so it definitely doesn't collapse into induction ?
– user6917
Commented Jan 15, 2015 at 18:47
• @MATHEMATICIAN - it is induction+explanation. Commented Jan 15, 2015 at 19:48
• what i was trying to get it is whether abduction tells us something we cannot induce. i assume so?
– user6917
Commented Jan 15, 2015 at 20:53
• This is an open issue as far as I'm aware, with people arguing for either side. Personally, I see abduction to collapse into induction, since the value behind the abductive choice can usually only be justified inductively.
– MM8
Commented Feb 3, 2017 at 9:35
• @MMB what is meant be the "value behind the abductive choice"? Commented Sep 15, 2023 at 1:19

This Youtube video distinguished and explained most clearly for me:

For a textual explanation, and the 3 words' etymology and etymological definitions, see https://www.merriam-webster.com/words-at-play/deduction-vs-induction-vs-abduction

If you have trouble differentiating deduction, induction, and abduction, thinking about their roots might help. All three words are based on Latin ducere, meaning "to lead." The prefix de- means "from," and deduction derives from generally accepted statements or facts. The prefix in- means "to" or "toward," and induction leads you to a generalization. The prefix ab- means "away," and you take away the best explanation in abduction.

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