Mystery Shore

Deduction, Induction and Abduction




Though the terms deduction, induction and abduction are not widely known or used, they point to three ways of thinking. Triadic Philosophy sees them as means of arriving at truth and beauty.

They are deduction, induction and abduction.

Deductions are based on knowing what is deduced will actually prove true. I deduce my darling will leave the apartment. I know the signs. True. She does.

Inductions are more a speculative. Possibilities, not certainties. A collecting of inputs.

Abduction are speculations which may be true regardless of evidence. Abductions are guesses of what might prove necessary. They are very common. They are the most widespread form of universal thinking.

Global warming started as abduction. It became induction. It is now a full-fledged induction.

We think in stages. All are important. All have merit.

Peirce: CP 2.96 Cross-Ref:††

96. Argument is of three kinds: Deduction, Induction, and Abduction (usually called adopting a hypothesis). A… Deduction, is an argument representing facts in the Premiss, such that… we find ourselves compelled to represent the fact stated in the Conclusion… Deduction is … the only kind of argument which is compulsive. An originary Argument, or Abduction, is an argument which presents facts in its Premiss which present a similarity to the fact stated in the Conclusion, but which could perfectly well be true without the latter being so … An Abduction is Originary in respect to being the only kind of argument which starts a new idea. A Transuasive Argument, or Induction, is an Argument which sets out from a hypothesis, resulting from a previous Abduction, and from virtual predictions, drawn by Deduction, of the results of possible experiments …