Draft:Appeal to common sense

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An appeal to common sense is a logical fallacy that occurs when something is claimed to be true because (according to the speaker) it is "common sense" or "obvious" that the claim is true. It is a form of or similar to an Argument from incredulity.

It is an emotional appeal and an informal fallacy.


P1: X is obvious.

P2: (unstated) Anything obvious is true

C: X is true


"It's obvious that the world must have a creator!" or "Obviously, just like a watch has a maker, the world does!"

(Argument from incredulity) "It's obvious the world has no creator!" (which is the opposite of the above example)

"It's obvious that the Earth is flat!"


Different people have different and sometimes contradictory "common sense"; there is no universal common sense. Even if everybody alive agreed something is common sense, it wouldn't automatically be true.

See also[edit]

Argument from incredulity

Appeal to emotion

Argumentum ad populum

Argument from design

Argument from first cause