Logical ReasoningDifficulty: Hard

PT109 S1 Q24 Explanation

Supervisor: Our next budget proposal

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

TopicsFlaw

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Stimulus

Supervisor: Our next budget proposal will probably be approved, because normally about half of all budget proposals that the vice president considers are approved, and our all been turned down.

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
24.

The supervisor’s reasoning is flawed because it presumes, without giving

Answer choices

  1. Too Strong: Guarantees / Next Five19% picked this

    the last five budget proposals’ having been turned down guarantees that the next five budget

    The author is only talking about the next one, and she isn't saying its approval is guaranteed, just that its approval is likely ("probably be approved").

  2. Out of Scope: Required To Approve10% picked this

    the vice president is required to approve at least half of all

    The author just said that "normally about half are approved". There's no way we can take that to mean "it is required that at least half are approved".

  3. Correct69% picked this

    having the last five budget proposals turned down affects the likelihood that the next budget proposal

    Why this is right

    This is stating the Gambler's Fallacy type of thinking. Suppose the only premise we had was "normally about half of all budget proposals are approved". How should we estimate the probability that this next budget proposal will be approved? We'd say, "Okay, all other things being equal, it's got around a 50% chance of being approved". We wouldn't say "it will probably be approved, because that would go against the idea that normally only about half of them are actually approved." The author adds in another premise, "Yes, but --- the previous five have been turned down, thus the next one probably will be approved." So the author is clearly thinking that this streak of rejections moves the probability from where it would be by default (around 50%) to the level of probably (greater than 50%). If we negate this answer it becomes an objection: "Yo, author -- whether the last five proposals were approved or rejected has no effect on the likelihood that the next one will be approved or rejected, therefore the probability is around 50%, not probable"

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

  4. Out of Scope: Deserved1% picked this

    the majority of the last five budget proposals deserved to be

    The author isn't offering any thoughts on whether the last five proposals were correctly or incorrectly turned down. If we negated this answer and said, "Most of the last five did not deserve to be turned down", that might even strengthen the author, because he could argue that the VP has even more of an impetus to approve this next proposal, after having undeservedly rejected some previous ones.

  5. Out Of Scope1% picked this

    the likelihood that a budget proposal will be approved is influenced by the amount of money

    Out Of Scope: Amount Of Money Requested The argument doesn't discuss anything about how much money is requested in this proposal vs. another one, so the author hasn't committed to any notions about a relationship between amount requested and likelihood of approval.

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