8 logical fallacies that are hard to spot - Deepstash

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8 logical fallacies that are hard to spot

bigthink.com

A fallacy is the use of faulty reasoning in an argument.

There are formal and informal fallacies:

  • A formal fallacy describes a flaw in the construction of a deductive argument.
  • An informal fallacy describes an error in reasoning.

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In this fallacy, someone behaves in a way that negatively affects others but then gets upset when others criticize their behavior. They will reply with a "mind your own business."
For instance, someone who doesn't see a reason to bathe, but then boards a full 10-hour flight.

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It happens when someone continues in a course of action, even if evidence shows that it's a mistake.

Common phrase: "We've always done it this way, so we'll keep doing it this way." "I've already invested so much..."

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If-by-whiskey is a fallacy named after a speech given in 1952 by Noah S. Sweat Jr. It is used to conceal a lack of a position or to dodge a tough question. 

If, by whiskey, you mean the brew that causes so many problems, then I'm against it. But if whiskey means the oil of convers...

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This fallacy involves arguing against a position because you think the ideas would start a chain reaction of bad things, even though you don't have evidence to support your claim.

Common phrase: "If we do that, then what's next?"

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This fallacy argues for a specific position because there are no other realistic alternatives.
Common phrase: "What else are we going to do?"

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This is a common fallacious rhetorical strategy that is difficult to spot.

It occurs when someone's claim is threatened with counter-evidence. They then come up with a rationale to dismiss the counter-evidence in the hope to protect their original claim.

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In this fallacy, when someone doesn't have a strong argument, they will sprout irrelevant facts, numbers, anecdotes and other information to confuse the issue.

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This fallacy occurs when decisions are made based on observations or quantitative criteria while ignoring other factors.
Common phrase: "You can't measure that, so it's not important."

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