Logical ReasoningDifficulty: Hard

PT120 S3 Q20 Explanation

Philosopher: It is absurd to

A free, expert breakdown of this official LSAT Logical Reasoning question.

TopicsMethod

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Stimulus

Philosopher: It is absurd to argue that people are morally obligated to act in a certain way simply because not acting in that way would be unnatural. An unnatural action is either a violation of the laws of nature or a statistical anomaly. There is no possibility of acting as one cannot, usually done provide any good reason not to do it.

What this question is testing

Method

Your task

Describe how the argument proceeds — the technique it uses to reach its conclusion.

Common trap

Answers that describe a method the argument doesn't actually use.

Winning move

Track the role each statement plays, then match that to the choice describing the same moves.

Reading along? Open the full official question in LawHub — we show a fragment here and keep the reasoning in our own words.

The question
20.

Which one of the following most accurately describes a technique used in

Answer choices

  1. Bad Premise Match8% picked this

    undermining a concept by showing that its acceptance would violate a

    The author's conclusion is undermining a concept. What is that concept? you're morally obligated to act naturally Does the author ever say that if we accepted that "we are all morally obligated to act naturally" that this would violate a law of nature? No. The author brought up violating laws of nature when she was interpreting "act naturally" to mean "don't violate a law of nature".

  2. Correct59% picked this

    stating the definition of a key term of

    Why this is right

    Yes, this happens (which is our only metric of right / wrong). The author states the definition of "an unnatural action". She says, "an unnatural action is either a violation of the laws of nature or a statistical anomaly."

    Skill tested: Method · how this choice captures the argument's function is the move to repeat next time.

  3. Bad Premise Match1% picked this

    using statistical findings to dispute a

    The author is trying to dispute a claim, the claim that "we're morally obligated to act naturally". Does she ever discuss any statistical findings in the evidence? Heck no.

  4. Bad Premise Match30% picked this

    undermining a claim by showing that the claim

    The author is undermining a claim, the claim that "we're morally obligated to act naturally". Does the author do so by showing that the claim is self-contradictory, that by acting naturally we would be doing the opposite of what we're morally obligated to do? No. The author doesn't try to argue that the claim contradicts itself. The author is arguing the claim is absurd, which is synonym for "dumb / meaningless / silly". A self-contradiction is a very specific hard-to-achieve kind of thing. SELF-CONTRADICTION I am not speaking English right now. The Sun always rises in the East, except today it rose in the West

  5. Out of Scope2% picked this

    using empirical evidence to support one definition of a key term of the

    Out of Scope: empirical evidence Out of Scope: support on over another There isn't any empirical evidence discussed (observable measurable data). The author provides two possible definitions for the key term "unnatural action", but she never argues for one over the other. She just shows how whichever definition you choose, you still get an absurd original position. Also, amusingly, we could never pick this answer since it implies (B). Clearly, according to this answer choice, the argument did define a key term, so we couldn't pick (E) and eliminate (B).

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