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Logical Fallacies EXIT Continue… A logical fallacy is a statement that contains faulty reasoning. Don’t give your reader a reason to doubt your information. Persuasive writing especially requires sound logic to support opinions. MENU

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Logical Fallacies EXIT This statement sets up only two options when in fact there are other strategies for allowing some snowmobiles without ruining the park. It is too extreme to seem reasonable. Either we make snowmobiles in Yellowstone National Park illegal, or the park will be ruined. A logical fallacy is a statement that contains faulty reasoning. Don’t give your reader a reason to doubt your information. Persuasive writing especially requires sound logic to support opinions. Next PREVIOUS MENU

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Page 1: Logical Fallacies EXIT Continue A logical fallacy is a statement that contains faulty reasoning. Dont give your reader a reason to doubt your information

Logical Fallacies

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Continue…

A logical fallacy is a statement that contains faulty reasoning. Don’t give your reader a reason to doubt your information. Persuasive writing especially requires sound logic to support opinions.

MENU

Page 2: Logical Fallacies EXIT Continue A logical fallacy is a statement that contains faulty reasoning. Dont give your reader a reason to doubt your information

Logical Fallacies

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What is wrong with this statement?

Either we make snowmobiles in Yellowstone National Park illegal, or the park will be ruined.

Click to see an analysis

A logical fallacy is a statement that contains faulty reasoning. Don’t give your reader a reason to doubt your information. Persuasive writing especially requires sound logic to support opinions.

PREVIOUS MENU

Page 3: Logical Fallacies EXIT Continue A logical fallacy is a statement that contains faulty reasoning. Dont give your reader a reason to doubt your information

Logical Fallacies

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This statement sets up only two options when in fact there are other strategies for allowing some snowmobiles without ruining the park. It is too extreme to seem reasonable.

Either we make snowmobiles in Yellowstone National Park illegal, or the park will be ruined.

A logical fallacy is a statement that contains faulty reasoning. Don’t give your reader a reason to doubt your information. Persuasive writing especially requires sound logic to support opinions.

Next

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Page 4: Logical Fallacies EXIT Continue A logical fallacy is a statement that contains faulty reasoning. Dont give your reader a reason to doubt your information

Common logical fallacies include the following. Click to choose the fallacy you want to explore.

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Logical Fallacies

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•Overgeneralization•Circular reasoning•False analogy•Either/or reasoning•Single cause•False cause

Page 5: Logical Fallacies EXIT Continue A logical fallacy is a statement that contains faulty reasoning. Dont give your reader a reason to doubt your information

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Logical Fallacies

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OvergeneralizationAn overgeneralization is a statement so broad that it can easily be disproved. Look for words like all, everyone, no one, always, never, none, when you revise.

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Page 6: Logical Fallacies EXIT Continue A logical fallacy is a statement that contains faulty reasoning. Dont give your reader a reason to doubt your information

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Logical Fallacies

OvergeneralizationAn overgeneralization is a statement so broad that it can easily be disproved. Look for words like all, everyone, no one, always, never, none, when you revise.

What is the overgeneralization in this sentence?

The weather report is always wrong.

Click to see the overgeneralization

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Page 7: Logical Fallacies EXIT Continue A logical fallacy is a statement that contains faulty reasoning. Dont give your reader a reason to doubt your information

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Logical Fallacies

OvergeneralizationAn overgeneralization is a statement so broad that it can easily be disproved. Look for words like all, everyone, no one, always, never, none, when you revise.

What is the overgeneralization in this sentence?

The weather report is always wrong.

Click to see a revision

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Page 8: Logical Fallacies EXIT Continue A logical fallacy is a statement that contains faulty reasoning. Dont give your reader a reason to doubt your information

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Logical Fallacies

OvergeneralizationAn overgeneralization is a statement so broad that it can easily be disproved. Look for words like all, everyone, no one, always, never, none, when you revise.

The weather report is always wrong. ORIGINAL

The weather report is often wrong. REVISED

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Page 9: Logical Fallacies EXIT Continue A logical fallacy is a statement that contains faulty reasoning. Dont give your reader a reason to doubt your information

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Logical Fallacies

Circular ReasoningAn attempt to prove a statement by simply repeating it in different words is circular reasoning.

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Page 10: Logical Fallacies EXIT Continue A logical fallacy is a statement that contains faulty reasoning. Dont give your reader a reason to doubt your information

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Logical Fallacies

Click to see the repeated idea

Circular ReasoningAn attempt to prove a statement by simply repeating it in different words is circular reasoning.

Where is the repeated idea in this sentence?

Snow leopards are endangered because they are dying out.

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Page 11: Logical Fallacies EXIT Continue A logical fallacy is a statement that contains faulty reasoning. Dont give your reader a reason to doubt your information

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Logical Fallacies

Circular ReasoningAn attempt to prove a statement by simply repeating it in different words is circular reasoning.

What is the repeated idea in this sentence?

Snow leopards are endangered because they are dying out.

Continue…

PREVIOUS MENU

Page 12: Logical Fallacies EXIT Continue A logical fallacy is a statement that contains faulty reasoning. Dont give your reader a reason to doubt your information

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Logical Fallacies

Circular ReasoningAn attempt to prove a statement by simply repeating it in different words is circular reasoning.

How would you revise to avoid this circular reasoning?

Snow leopards are endangered because they are dying out.

Click to see a revision

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Page 13: Logical Fallacies EXIT Continue A logical fallacy is a statement that contains faulty reasoning. Dont give your reader a reason to doubt your information

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Logical Fallacies

Circular ReasoningAn attempt to prove a statement by simply repeating it in different words is circular reasoning.

Snow leopards are endangered because they are dying out.

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they aredying out.

Page 14: Logical Fallacies EXIT Continue A logical fallacy is a statement that contains faulty reasoning. Dont give your reader a reason to doubt your information

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Logical Fallacies

Circular ReasoningAn attempt to prove a statement by simply repeating it in different words is circular reasoning.

Snow leopards are endangered because

PREVIOUS MENU

Page 15: Logical Fallacies EXIT Continue A logical fallacy is a statement that contains faulty reasoning. Dont give your reader a reason to doubt your information

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Logical Fallacies

Circular ReasoningAn attempt to prove a statement by simply repeating it in different words is circular reasoning.

Snow leopards are endangered because

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so many have been killed for their fur.

Page 16: Logical Fallacies EXIT Continue A logical fallacy is a statement that contains faulty reasoning. Dont give your reader a reason to doubt your information

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Logical Fallacies

Circular ReasoningAn attempt to prove a statement by simply repeating it in different words is circular reasoning. This revised sentence gives specific information about why snow leopards are endangered rather than repeating that they are dying out.

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Snow leopards are endangered because so many have been killed for their fur.

Page 17: Logical Fallacies EXIT Continue A logical fallacy is a statement that contains faulty reasoning. Dont give your reader a reason to doubt your information

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Logical Fallacies

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False AnalogyA false analogy is a comparison between two things that are different in some essential way.

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Page 18: Logical Fallacies EXIT Continue A logical fallacy is a statement that contains faulty reasoning. Dont give your reader a reason to doubt your information

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Logical Fallacies

False AnalogyA false analogy is a comparison between two things that are different in some essential way.

What is wrong with this comparison?

Fishing without a license is like driving a car without a license.

Click to see an analysis

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Page 19: Logical Fallacies EXIT Continue A logical fallacy is a statement that contains faulty reasoning. Dont give your reader a reason to doubt your information

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Logical Fallacies

False AnalogyA false analogy is a comparison between two things that are different in some essential way.

This argument compares fishing to driving. The two are not comparable. Fishing without a license is merely illegal; no one will get hurt. Driving without a license implies the driver isn’t trained, which can be dangerous.

Fishing without a license is like driving a car without a license.

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Page 20: Logical Fallacies EXIT Continue A logical fallacy is a statement that contains faulty reasoning. Dont give your reader a reason to doubt your information

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Logical Fallacies

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Either/Or ReasoningAn either/or fallacy is a statement suggesting that there are only two possible ways to view a situation or only two options to choose from.

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Page 21: Logical Fallacies EXIT Continue A logical fallacy is a statement that contains faulty reasoning. Dont give your reader a reason to doubt your information

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Logical Fallacies

Either/Or ReasoningAn either/or fallacy is a statement suggesting that there are only two possible ways to view a situation or only two options to choose from.

What other possibilities can you imagine for this example?

Either I get a private coach or I’ll never make the soccer team.

Click to see an analysis

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Page 22: Logical Fallacies EXIT Continue A logical fallacy is a statement that contains faulty reasoning. Dont give your reader a reason to doubt your information

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Logical Fallacies

Either/Or ReasoningAn either/or fallacy is a statement suggesting that there are only two possible ways to view a situation or only two options to choose from. The speaker probably has other options besides getting a private coach.

Either I get a private coach or I’ll never make the soccer team.

Click to see a revision

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Page 23: Logical Fallacies EXIT Continue A logical fallacy is a statement that contains faulty reasoning. Dont give your reader a reason to doubt your information

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Logical Fallacies

Either/Or ReasoningAn either/or fallacy is a statement suggesting that there are only two possible ways to view a situation or only two options to choose from.

Either I get a private coach or I’ll never make the soccer team.ORIGINAL

If I want to make the soccer team, I need to practice more and maybe get a private coach.

REVISED

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This revision removes the limited options and presents a more reasonable statement.

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Page 24: Logical Fallacies EXIT Continue A logical fallacy is a statement that contains faulty reasoning. Dont give your reader a reason to doubt your information

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Logical Fallacies

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Single CauseIn a single cause fallacy, the writer assumes that an event has just one cause when there are actually multiple causes.

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Page 25: Logical Fallacies EXIT Continue A logical fallacy is a statement that contains faulty reasoning. Dont give your reader a reason to doubt your information

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Logical Fallacies

Single CauseIn a single cause fallacy, the writer assumes that an event has just one cause when there are actually multiple causes.

Can you think of other possible causes for why people are overweight?

Some people are overweight because they eat too much fatty food.

Click to see a revision

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Page 26: Logical Fallacies EXIT Continue A logical fallacy is a statement that contains faulty reasoning. Dont give your reader a reason to doubt your information

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Logical Fallacies

Single CauseIn a single cause fallacy, the writer assumes that an event has just one cause when there are actually multiple causes.

Some people are overweight because they eat too much fatty food.

ORIGINAL

Some people are overweight because they eat too much fatty food, eat too much food in general, and don’t exercise enough.

REVISED

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Page 27: Logical Fallacies EXIT Continue A logical fallacy is a statement that contains faulty reasoning. Dont give your reader a reason to doubt your information

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Logical Fallacies

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False CauseJust because one event occurred after another in time, the first event may not have caused the second event. Don’t let that kind of false cause reasoning show up in your writing.

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Page 28: Logical Fallacies EXIT Continue A logical fallacy is a statement that contains faulty reasoning. Dont give your reader a reason to doubt your information

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Logical Fallacies

False CauseJust because one event occurred after another in time, the first event may not have caused the second event. Don’t let that kind of false cause reasoning show up in your writing.

What might be the true causes for this outcome?

Jason lost the race because he didn’t get those new running shoes.

Click to see an analysis

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Page 29: Logical Fallacies EXIT Continue A logical fallacy is a statement that contains faulty reasoning. Dont give your reader a reason to doubt your information

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Logical Fallacies

False CauseJust because one event occurred after another in time, the first event may not have caused the second event. Don’t let that kind of false cause reasoning show up in your writing. While it’s true new running shoes might have helped, it’s more likely that several other factors caused him to lose the race.

Jason lost the race because he didn’t get those new running shoes.

Click to see a revision

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Page 30: Logical Fallacies EXIT Continue A logical fallacy is a statement that contains faulty reasoning. Dont give your reader a reason to doubt your information

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Logical Fallacies

False CauseJust because one event occurred after another in time, the first event may not have caused the second event. Don’t let that kind of false cause reasoning show up in your writing.

Jason lost the race because he didn’t get those new running shoes.

ORIGINAL

Jason lost the race because he didn’t train hard enough, didn’t eat breakfast, and didn’t get enough sleep the night before the race.

REVISED

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