Reading ComprehensionDifficulty: Hard

PT108 S4 P4 Q27 Explanation

Darwin/Taphonomy

A free, expert breakdown of this official LSAT Reading Comprehension question.

TopicsPrimary PurposeSociety

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Passage

Darwin's conception of early prehistoric humans as confident, clever hunter-gatherers has long dominated anthropology. His theory has been reinforced by an accident of history: the human fossil record has been found largely in reverse order. Remains of humans' most recent forebears, who lived 35,000 to 100,000 years ago, were discovered in 1856; in which their environments differ from prehistoric ones (for example, in containing fewer large animal predators).

Recent intellectual developments, such as the new field of taphonomy, have called into question the traditional hypothesis that early hominids outsmarted the predators with whom they competed for meat and that they mastered their world through hunting. Taphonomy investigates the transformation of skeletal remains into fossil—it asks, for example, whether bone piles whether hyenas' teeth scar animal bones differently than do human tools.

Taphonomy has been utilized by some researchers in studying a group of animal fossils, hominid fossils, and stone tools that were almost two million years old. By comparing the microscopic features of linear grooves on the fossilized animal bones with similar grooves on modern bones, the researchers found that cut marks made joints and that the toothmarks of animal carnivores often underlay rather than overlay the cut marks.

The researchers hypothesized from this evidence that early hominids were scavengers of meat left from carnivore kills, rather than hunters of live prey. From patterns of wear on fossilized hominid teeth, the researchers further deduced that early hominids, like other scavengers, ate fruit primarily and meat only occasionally. Early hominids could have hominids who often perched in trees and who foraged and scavenged alone or in small groups.

What this question is testing

Primary Purpose

Your task

Pin down exactly what the question asks about the passage — a detail, the author's view, the structure, or the main point — before looking at the choices.

Common trap

Answers that restate a true detail from the passage but don't answer the specific question being asked.

Winning move

Anticipate the answer in your own words from the passage, then find the choice that matches that prediction.

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

The question
27.

The author's primary purpose in writing the passage

Answer choices

  1. Wrong Emphasis: research methods3% picked this

    differentiate between outdated and contemporary research

    Even though the new research method of taphonomy plays a supporting role in helping us to this new understanding about early humans, the passage is primarily about our revised assessment of early humans. This answer makes it sound like it was a passage all about different research methods.

  2. Wrong Emphasis8% picked this

    expose the preconceptions behind previous

    In an Old / New passage, the more important half is always the New idea. So if we're only going to mention one half of that, it should be the new understanding aided by recent taphonomical research. This answer is focused on erroneous previous research, which means it's really only addressing the 1st paragraph of the passage.

  3. Weak Match: narrative of events3% picked this

    present a narrative of how historical events might

    The author is ultimately trying to leave us with an updated understanding of early humans' food procurement behaviors. We could stretch that and say, "if the author is explaining that early humans got their food mainly by scavenging, not hunting", isn't that "presenting a narrative story about how the historical event of getting food unfolded"? That's way too stretchy. Early humans' procuring food does not qualify as "historical events". It was a daily necessity. If we're saying "the survival of early humans" is a historical event, and scavenging is how it unfolded, again, we're just being too stretchy with language when a superior answer doesn't require the same reach.

  4. Correct65% picked this

    explain the basis for a revisionary approach to

    Why this is right

    We love "revisionary approach" as a nod to our Old / New framework. Since the author highlights taphonomy as the 2nd lead character in this passage, the "explain the basis" matches well with that. We probably would have said, "to explain how a new method of research is revising how we think about early humans" and they're saying, "explaining the basis for a revisionary approach to a subject".

    Skill tested: Primary Purpose · how this choice captures the passage's function is the move to repeat next time.

  5. Too Strong: replaced21% picked this

    describe how a new theory has replaced the

    This is very tempting; it definitely resonates with our Old / New yearnings. We just have to figure out whether "replaced" is justified. Most Old / New passages are presenting new research that suggests a different understanding, but they are still new enough to their field that they haven't become settled science yet. Our Most Valuable Sentence (the first sentence of paragraph 2) says, "Recent intellectual developments have called into question the traditional hypothesis". That's not as strong as "new theory has replaced old theory".

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