Logical ReasoningDifficulty: Hard

PT6 S2 Q14 Explanation

Joshua Smith’s new novel was

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

TopicsFlaw

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Stimulus

Joshua Smith’s new novel was criticized by the book editor for The Daily Standard as implausible. That criticism, like so many other criticisms from the same source in the past, is completely unwarranted. As anyone who has actually read the novel would agree, each one of the incidents in which that could very well have happened to someone or other.

What this question is testing

Flaw

Reasoning

The author defends Smith's novel by saying: each individual incident in the book is the sort of thing that could happen to someone. So the novel is plausible.

Evaluate

The slip is moving from "each part is plausible" to "the whole is plausible."

Imagine a novel where the main character: wins the lottery, survives a plane crash, finds buried treasure, gets struck by lightning, and meets a long-lost twin — all in one weekend. Each event, by itself, can happen to someone. But all of them happening to one person in one short stretch is wildly improbable. The whole is much less plausible than any of its parts.

Same flaw here. The author is defending the novel's plausibility one incident at a time, ignoring that the combination might still be unbelievable.

Goal

Find the answer that names this part-to-whole flaw: assuming the whole has a property because each of its parts does.

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

The question
14.

Which one of the following is the most serious error of reasoning

Answer choices

  1. Bad Description16% picked this

    It relies on the assumption that a criticism can legitimately be dismissed as unwarranted if it is offered by someone who

    The author dismisses the criticism by appealing to the content of the novel, not by saying the critic has previously displayed bad judgment. The mention of "criticisms from the same source in the past" is offered as further context for the author's dismissal — but the actual argument given is about each incident being plausible, not about the critic's judgment history. The author does not rely on past judgment as the reason.

  2. Bad Description9% picked this

    It ignores the fact that people can agree about something even though what they agree about

    The author appeals to what readers would agree about — but the issue here is not whether agreement equals truth. The flaw is in moving from individual-incident plausibility to whole-novel plausibility. Whether people can agree on something false is not the operative problem.

  3. Ad Hominem2% picked this

    It calls into question the intellectual integrity of the critic in order to avoid having to address the grounds on

    The author does not attack the critic personally instead of addressing the criticism. The author does address the criticism on its merits — by arguing each incident is plausible. The flaw is in how the author addresses it (the part-to-whole leap), not in dodging it through personal attack.

  4. Correct62% picked this

    It takes for granted that a whole story will have a given characteristic if each of its

    Why this is right

    This nails the flaw. The author concludes the whole novel has a property (plausibility) by establishing that each part (each individual incident) has that property. But plausibility does not transfer that way — a bunch of individually plausible events can combine into an implausible whole if their combination is too unlikely. The argument assumes a property of parts must be a property of the whole.

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

  5. Circular Reasoning11% picked this

    It attempts to justify its conclusion by citing reasons that most people would find plausible only if they were already convinced

    This describes circular reasoning — citing reasons that only work if you already accept the conclusion. The author here does not do that; the appeal to "anyone who has actually read the novel would agree" can be evaluated independently of believing the conclusion. The flaw is structural (parts-to-whole), not circular.

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