Weakening by Attacking Premises

The most direct way to weaken an argument is to show that one or more of its premises are flawed, outdated, unrepresentative, or insufficiently supported. If a premise collapses, the foundation of the argument is undermined, and the conclusion becomes less probable. This lesson examines the main ways in which premises can be attacked and how to identify the most effective attacks in LNAT answer options.

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How Attacking Premises Weakens an Argument

An argument's conclusion is only as strong as its weakest premise. If you can show that a key premise is false, misleading, or poorly supported, the argument loses its grounding.