Deductive and Inductive Reasoning Flow Chart: Valid vs Invalid, Strong vs Weak, Sound vs Unsound

A logic flowchart of deductive and inductive reasoning, deductive validity, inductive strength, sound arguments and cogent arguments. Examples are given for deductive vs inductive reasoning, valid vs invalid reasoning, strong vs weak reasoning, sound vs unsound reasoning, and cogent vs uncogent reasoning. PDF of the chart available here:

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0:00 Introduction
0:20 Deductive Reasoning (Deduction)
0:51 Inductive Reasoning (Induction)
1:16 Review of Deductive and Inductive Reasoning (Deduction vs. Induction)
1:41 Invalid Reasoning (Deductive Invalidity)
2:30 Valid Reasoning (Deductive Validity)
3:06 Weak Reasoning (Inductively Weak Arguments)
3:43 Strong Reasoning (Inductively Strong Arguments)
4:30 Review of Deductive Validity and Inductive Strength
5:49 Two ways an argument can go wrong
6:24 Deductive Unsoundness (Deductively Unsound Arguments)
6:46 Deductive Soundness (Deductively Sound Arguments)
6:59 Inductive Uncogency (Inductively Uncogent Arguments)
7:33 Inductive Cogency (Inductively Cogent Arguments)
7:55 Overview of logic flowchart

Further Reading

Paul Herrick, Introduction to Logic
Chapter 3: "The Basic Types of Argument”
Chapter 4, “How to Evaluate a Deductive Argument”
Ch. 5, "How To Evaluate an Inductive Argument"

Music: Magic Scout Cottages by Kevin MacLeod

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[joxayah]

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[r.c.]

This is the best I've seen on the issue, especially in pointing out the difference between addressing the reasoning and addressing whether the premises are true.

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[VictoriaAngelinaLeighton-Nolly]

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[Andreatuzze]

this was the best video about logic I've seen so far thank you so much. Especially about soundness, so an argument to makes sense has to be sound. because it can work logically when it's a valid( or a tautology) but still making "no sense in the real world" because the premises are false. And finally all sound arguments are valid but not every valid argument is sound

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[aaali]

Your explanation is amazing. Thank you for simplifying Mr. Schopenhauer's book ( the art of being right ).

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