** Module: Venn diagrams**

- V00. Introduction
- V01. Basic notation
- V02. Everything and nothing
- V03. Exercises
- V04. Three circles
- V05. Exercises
- V06. Existence 1
- V07. Existence 2
- V08. Syllogism
- V09. Exercises
- V10. Limitations of Venn diagrams

** Quote of the page**

Men are apt to mistake the strength of their feeling for the strength of their argument. The heated mind resents the chill touch and relentless scrutiny of logic.

- William Gladstone

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- Analogical arguments

a. Is the statement "Every B is a C" true according to this diagram?

b. Is the statement "No A is a B" true according to this diagram?

c. Is the diagram consistent with the statement "Something is A"?

d. "Something is A and it is either B or C." Is this statement true according to this diagram?

e. Is the diagram consistent with the statement "Something is A or B"?