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A "'''slippery slope'''" argument is a common rhetorical device which suggests that a seemingly innocent small action will lead inevitably to a disastrous result. An argument of this form is '''invalid''' as there is no necessary logical connection between its premise and its conclusion. Indeed, it barely has any formal structure beyond if p, then q. Whilst it is therefore a [[logical fallacy]], its emotive appeal remains a depressingly effective way of convincing those who don't know their ''modus ponens'' from their elbow.  If the conclusion does follow from the premise, then the argument is not a fallacious slippery-slope argument, but instead a ''[[reductio ad absurdum]],'' which is a valid argument.

A "'''slippery slope'''" argument is a common rhetorical device which suggests that a seemingly innocent small action will lead inevitably to a disastrous result. An argument of this form is invalid if there is no necessary logical connection between its premise and its conclusion. Indeed, it barely has any formal structure beyond if p, then q. Whilst it is therefore a [[logical fallacy]], its emotive appeal remains a depressingly effective way of convincing those who don't know their ''modus ponens'' from their elbow.  If the conclusion does follow from the premise, then the argument is not a fallacious slippery-slope argument, but instead a ''[[reductio ad absurdum]],'' which is a valid argument.

==Examples==

==Examples==