Logical ReasoningDifficulty: Hard

PT158 S4 Q20 Explanation

Paula: Earthlike planets seem to

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

TopicsAgree/Disagree

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Stimulus

Paula: Earthlike planets seem to be the rule rather than the exception, so there probably are intelligent beings on other planets. Furthermore, we can expect our radio telescopes to detect signs of such beings. Alien scientists would have basically the same understanding of mathematics and physics that humans have. Thus physical phenomena and then develop technologies such as radio communication.

Ashley: That is like saying they would inevitably have the same legal or political systems that humans do. Our science, mathematics, and technology are unique outgrowths of our physiology, cognitive makeup, and environment. Using radio is a waste of time and money.

What this question is testing

Agree/Disagree

Paula's Position

Paula stands up at the conference and says:

Ashley's Position

Ashley grabs the mic:

Goal

They agree aliens might exist. They agree aliens would be intelligent. But Paula thinks intelligence naturally leads to radio, while Ashley thinks intelligence could lead anywhere depending on biology. We need the specific proposition where one says yes and the other says no.

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The question
20.

The dialogue provides the most evidence that Paula and Ashley disagree with each

Answer choices

  1. Correct58% picked this

    it is probable that there are intelligent alien beings who have

    Why this is right

    This is the precise point where Paula and Ashley's positions directly conflict. Paula explicitly argues that intelligent aliens would probably develop radio communication -- this is the foundation of her case for using radio telescopes. Ashley counters that our scientific and technological development, including radio, is a product of our unique cognitive makeup, implying that aliens would NOT necessarily develop radio. Paula would affirm this proposition; Ashley would deny it. Every other aspect of their arguments -- the value of the search, the nature of intelligence, the role of biology -- flows from this central factual dispute about whether alien species would arrive at radio technology.

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

  2. No Support from Paula9% picked this

    it is probable that there are intelligent alien beings who have the same legal or political

    Ashley mentions legal and political systems as an analogy to illustrate her broader point: just as it would be presumptuous to assume aliens have our legal systems, it is presumptuous to assume they have our science. This is a rhetorical device, not a substantive claim. Paula never addresses alien legal systems at all. For a genuine point of disagreement, both speakers must hold inferable positions on the topic that conflict with each other. Since Paula says nothing about alien legal systems and Ashley raises them only as an analogy, there is no actual dispute on this topic.

  3. Both Might Agree11% picked this

    our technology is influenced by our

    Ashley's core thesis is that technology is shaped by a species' cognitive and physiological makeup -- this is her explicit position. But Paula does not necessarily dispute this general principle. Paula could agree that cognition influences technology while still concluding that, despite cognitive differences, radio communication is a likely convergent development for any intelligent species. Their disagreement is about the specific outcome (whether aliens would develop radio), not about the general principle (whether cognition shapes technology). This answer identifies common ground rather than a point of conflict.

  4. Out of Scope for Ashley8% picked this

    there is likely to be intelligent life on

    Paula assumes intelligent life exists on other planets and argues for a particular search method. Ashley's critique is conditional: even if intelligent aliens exist, we cannot assume they developed radio. She targets the search methodology, not the premise of alien existence. Ashley never expresses skepticism about whether intelligent life exists elsewhere -- she simply thinks we are looking for it the wrong way. Without Ashley clearly denying alien existence, this is not a point of disagreement between the two speakers.

  5. Out of Scope for Both14% picked this

    scientists should spend more time and money on the search for

    Neither speaker takes a clear position on whether overall spending on searching for alien life should increase. While Ashley calls radio telescopes a "waste of time and money," this is a critique of the specific method, not a position on total research funding. She might support redirecting that money to different search technologies. Paula advocates for radio telescopes but never addresses total spending levels. For a point of disagreement, both speakers must hold inferable and conflicting positions. Their debate is about whether radio is the right approach, not about how much to budget for the search in general.

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