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Logic Introduction

Logic Introduction

 
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Author: Jacob Sorem
Objective:
  • Define a Syllogism
  • Define Deductive and Inductive reasoning
  • Define a Logical Fallacy
(more)
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Tutorial

Syllogisms

The structure of the logical syllogism involves premise statements and a conclusion. Generally, syllogisms are made up of three statements (two premises and a conclusion). In those three statements, there are three concepts that are related (A, B, and C). The Syllogism then becomes:

  1. Premise: A is B
  2. Premise: C is A
  3. Conclusion: Therefore C is B

There is also a way to introduce a negative. (Note how this changes the order of the C relationship to A and B.)

  1. Premise: A is B
  2. Premise: C is not B
  3. Conclusion: Therefore C is not A.

The following videos give further explanations as well as examples.

Deductive and Inductive Reasoning

Application: Finding Logical Arguments in an Article

Article link used in the video:

http://online.wsj.com/article/SB10001424052702303404704577311943943416560.html

Appliation: Identifying Logical Fallacy in an Article

Article link used in video:

http://minnesota.publicradio.org/display/web/2012/03/14/debate0315/

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