The argument from incredulity

Is a logical fallacy where someone concludes that since they can’t believe that a certain concept is true, then it must be false and vice versa.

Its 2 basic forms:

I can’t imagine how X can be true; therefore, X must be false.”

I can’t imagine how X can be false; therefore, X must be true.”

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The Argument from Incredulity: How People Explain What They Don't Understand

effectiviology.com

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... and to bring this up as part of an argument. The issue with doing so occurs when this incredulity isn’t justified or supported by concrete information, and when this lack of belief is used in order to assume that a preferred personal explanation must be the right one, despite the lack of proof.

At the same time, it’s also important to remember that it’s possible that the person using the argument from incredulity is right, despite the fact that their reasoning is flawed.

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Premise 1: I can’t explain or imagine how proposition X can be true.

Premise 2: if a certain proposition is true, then I must be able to explain or imagine how that can be.

Conclusions: proposition X is false.

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  1. Explain why this sort of reasoning is fallacious: namely the fact that your opponent’s inability to explain a certain phenomenon or to understand a certain theory, does not invalidate current explanations for it.
  2. Shift the burden of proof back to your opponent: ask them to support their initial assertion, and explain why they are incredulous, and why they think that this validates their position.
  3. If possible, you should show that there is scientific evidence that can be used in order to explain the phenomenon that’s being discussed. 

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Cherry picking

It is a logical fallacy and it happens when we choose and focus only on evidence that supports our views and arguments while ignoring anything that may contradict us.

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It is a logical fallacy and it occurs when someone incorrectly asserts that two or more things are equal because they share some characteristics, regardless of the notable differences between them.

For example, saying that cats and dogs are the same type of animal because they're both mammals and have a tail.

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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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8 logical fallacies that are hard to spot

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