Common Logical Fallacies. There are about 100 types of them

1. Common Logical Fallacies

There are about 100 types of them…
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2. Common Logical Fallacies

• argumentum ad hominem
• argumentum ad populum
• appeal to ignorance
• argument from omniscience
• argument from authority
• appeal to consequences
• circular reasoning
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3. Common Logical Fallacies

• confusion of correlation and causation
• post hoc, ergo propter hoc
• suppressed evidence
• loaded questions
• misunderstanding the nature of statistics
• statistics of small numbers
• red herring
• straw man
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4. What type of logical fallacies does this statement represent?

Many people get married,
that’s why it is good to be married.
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5.

argumentum ad populum
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6. What type of logical fallacies does this statement represent?

Abortion should be legal
because women have the right to
an abortion.
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7.

circular reasoning
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8. What type of logical fallacies does this statement represent?

My parents smoked all their lives,
and they never got cancer.
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9.

statistics of small numbers
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10. What type of logical fallacies does this statement represent?

She got sick after she visited
China, so something in China
caused her sickness.
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11.

post hoc, ergo propter hoc
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12. What type of logical fallacies does this statement represent?

Children who watch violence on TV
tend to act violently when they
grow up.
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13.

confusion of correlation and
causation
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