Logical ReasoningDifficulty: Hard

PT115 S4 Q23 Explanation

Editorial: Given the law of supply

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

TopicsFlaw

Keep going in LSAT Lab

  • Save & drill this skill build targeted practice sets from questions like this one

  • Video walkthroughs watch every question solved step by step

  • 81 official LSATs as questions, timed sections & full-length tests

Full official LSAT questions are available through LawHub. This page provides LSAT Lab's explanation, strategy, and review tools without republishing the full official question.

Stimulus

Editorial: Given the law of supply and demand, maximum total utility is assured only in a pure free market economy, although other types of economies might be able to achieve it. Obviously, then, a country that has a highly controlled economy, and is not trying to bring about a pure that is most likely to bring about maximum total utility.

What this question is testing

Flaw

Your task

Describe the reasoning error the argument actually commits.

Common trap

Answers that name a real logical flaw the argument doesn't actually make.

Winning move

Articulate the gap in the reasoning yourself, then match it to the choice that describes that gap.

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

The question
23.

The editorial’s argument is most vulnerable to criticism on the grounds

Answer choices

  1. Too Strong: any4% picked this

    presumes, without providing justification, that any country that does not have a pure free market economy has

    The author didn't have to assume that all economies are either pure free market or highly controlled. She just said that "if a highly controlled country isn't pursuing pure free market ... ". She actually says "other types of economies" at one point, indicating she recognizes the existence of several types.

  2. Out of Scope: distributing utility2% picked this

    presumes, without providing justification, that the way in which utility is distributed is less important than the

    Nothing in the argument is about how to distribute utility. It's just about which type of economy is assured or most likely to bring about max total utility.

  3. Bad Premise/Conclusion Match28% picked this

    fails to consider that the way most likely to achieve a particular end may not be the only

    The author fails to consider that: the only assured way to achieve X may not be the most likely way to achieve X This says that: the most likely way to achieve X may not be the only way

  4. Correct65% picked this

    presumes, without providing justification, that trying to bring about a condition that will ensure the achievement of an end must always be the way

    Why this is right

    Since this assumption is conditional strength, we can look at how it would be diagrammed and check to see whether it matches the conditional flow of the argument: This is saying: "if it's the condition that will ensure X, then it's the most likely way to achieve X." The author identified a pure free market economy as the only condition that will ensure X, and in the conclusion the author is acting like "pursuing pure free market" is the most likely way to achieve X.

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

  5. No Impact2% picked this

    ignores the possibility that a pure free market economy will have serious drawbacks that outweigh the benefits

    The conclusion isn't saying that we should pursue a pure free market economy. That sort of normative conclusion would be vulnerable to objections like this: "just because it would be good, in terms of maximum total utility, we shouldn't necessarily try to do a pure free market, because there might be drawbacks that outweigh the advantage". The conclusion is only saying, "If you're not pursuing X, you're not pursuing the most likely route to Y." I could say "If you're not attending Harvard Law, then you're not taking the law school most likely to help you become President", but that doesn't mean I'm saying you should go to Harvard.

Continue the review in LSAT Lab

Save this question, watch the video walkthrough, and drill similar questions in your LSAT Lab account.

LSAT Lab

Turn this review into a targeted study plan.

Save this question, drill more like it, watch the video walkthrough, and track your progress in your LSAT Lab account.

Start practicing free