What’s on the Deduction & Induction poster
Deductive against Inductive, side by side.
- Deductive: Conclusion follows necessarily
- Deductive: Valid if the form is correct
- Deductive: Sound if valid and premises true
- Deductive: Adds no new information
- Deductive: Fails through invalid form
- Inductive: Conclusion is probable, not certain
- Inductive: Judged strong or weak, not valid
- Inductive: Depends on sample and analogy
- Inductive: Extends beyond the evidence
- Inductive: Fails through unrepresentative cases
- Ask the right question of each: is it valid and sound, or is it strong and well groun…
Calling an inductive argument invalid is a category error. It can only be weak, and the fix is better or broader evidence.
Questions about the Deduction & Induction poster
- What’s on the Deduction & Induction poster?
- Deductive against Inductive, side by side. Deductive: Conclusion follows necessarily; Deductive: Valid if the form is correct; Deductive: Sound if valid and premises true; Deductive: Adds no new information; Deductive: Fails through invalid form; Inductive: Conclusion is probable, not certain; Inductive: Judged strong or weak, not valid; Inductive: Depends on sample and analogy; Inductive: Extends beyond the evidence; Inductive: Fails through unrepresentative cases; Ask the right question of each: is it valid and sound, or is it strong and well groun…. Calling an inductive argument invalid is a category error. It can only be weak, and the fix is better or broader evidence.
- Who is the Deduction & Induction poster for?
- Deduction & Induction belongs to the Communications & Media section rather than to a school year, because humanities is not something one grade owns. Anyone learning rhetoric & argument can pin it up — a beginner, a student mid-course, or someone revising years later.
- When should you use the Deduction & Induction poster?
- When judging whether an argument is valid, strong, or neither. A wall chart earns its place by being glanceable from where the work is happening, so Deduction & Induction belongs on the wall where that humanities work actually happens, within glancing distance, rather than filed away.
- What other posters go with Deduction & Induction?
- Kinds of Claim, The Five Canons and The Enthymeme sit alongside Deduction & Induction in the Communications & Media section. Printed together they make a wall rather than a single sheet, which is how a reference set actually gets used.Kinds of ClaimThe Five CanonsThe Enthymeme
- Is the Deduction & Induction poster free to download and print?
- Yes. Deduction & Induction downloads as a free PDF with no account, no email and no watermark, like everything else in the Communications & Media section. Print as many copies as you like for a home, a classroom, a library or a tutoring group; reselling the file is the only thing the licence rules out.Read the licence
- What size does the Deduction & Induction poster print at?
- Deduction & Induction is a vector PDF laid out for US Letter, and prints on A4 with Fit to page — the same file, no separate download. Because every mark on it is drawn rather than photographed, it stays sharp enlarged to A3, A2 or A1 at a copy shop. Colour carries emphasis only, so a greyscale print of Deduction & Induction loses nothing.Printing guide
Related posters
Charts that sit alongside Deduction & Induction on the same wall.
Kinds of Claim
Communications & Media
The Five Canons
Communications & Media
The Enthymeme
Communications & Media
Ethos, Pathos, Logos
Communications & Media
Refutation & Concession
Communications & Media
Delivery
Communications & Media
Fallacies of Evidence
Communications & Media
Fallacies of Relevance
Communications & Media
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