Argumentum ad baculum

"Threat of force" redirects here. It is not to be confused with Threat of force (public international law) or Threat display.

Argumentum ad baculum (Latin for "argument to the cudgel" or "appeal to the stick") is the fallacy committed when one appeals to force or the threat of force to bring about the acceptance of a conclusion.[1][2] One participates in argumentum ad baculum when one points out the negative consequences of holding the contrary position (ex. believe what I say, or I will hit you). It is a specific case of the negative form of an argument to the consequences.

The fallacious ad baculum

A fallacious logical argument based on argumentum ad baculum generally proceeds as follows:

If x accepts P as true, then Q.
x acts to prevent Q and succeeds, so Q is not true.
Therefore, P is not true.

This form of argument is an informal fallacy, because the attack on Q may not necessarily reveal anything about the truth value of the premise P. This fallacy has been identified since the Middle Ages by many philosophers. This is a special case of argumentum ad consequentiam, or "appeal to consequences".

Example

The colonel (x) wants to avoid death (Q), therefore he abandons capitulation (P), although the undesirability of death does not prove that death follows from capitulation.

The non-fallacious ad baculum

This argument is of the form:

If x accepts P, then Q.
x does not want Q and will act to prevent it.
Therefore, x will reject P.

The fallacy in the argument lies in assuming that the truth value of "x accepts P" is related to the truth value of P itself. Whether x does actually accept P, and whether P is true can not be inferred from the available statements. However, the argument can be changed into a valid modus tollens by changing the conclusion.

Example

If Peter does not deny knowing Jesus, he will be arrested by the Romans.
Peter does not want to be arrested by Romans.
Therefore, Peter denies knowing Jesus.

Note that this argument does not assert or come to any conclusion on whether Peter actually knows Jesus (cf. the fallacious conclusion "Therefore, Peter does not know Jesus").

See also

References

  1. ↑ http://philosophy.lander.edu/logic/force.html
  2. ↑ http://logic.sysu.edu.cn/Soft/UploadSoft/200712/20071221103721774.pdf

External links


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