Reading Comprehension

PT149 · S2 · P2 · Q6 The Multiverse

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In a typical Hollywood action movie, the hero skirts death to complete a mission.

Topic

The "fine-tuning" of the laws of physics in our universe, the idea of the multiverse, and recent challenges to how exceptional our universe may really be.

Framework

Challenge Position

Main Point

Although many scientists argue that our universe appears "finely tuned" to allow life and see this as evidence for the existence of a multiverse, new research (like that done by the author) suggests that alternative sets of physical laws could also allow complex structures and possibly life, so the fine-tuning argument might be overstated. (The Most Valuable Sentence: This is found at the end of the fifth paragraph.)

P1: Action Movie Analogy

The author starts by comparing the survival of a movie hero against all odds to how finely balanced the conditions in our universe seem to be—lots of things could have gone wrong, but they didn't.

P2: Fine-Tuning Problem in Physics

Just like in the movie, our universe seems unlikely; a tiny change in physical laws could have prevented life from existing. This mysterious "fine-tuning" makes the existence of our universe seem improbable.

P3: The Multiverse Hypothesis

Some cosmologists try to solve this improbability by proposing there are lots of universes (a "multiverse"), each with different laws, making it less surprising that at least one (ours) turned out just right.

Which one of the following most accurately states the main point of the passage?

Correct
Although the universe seems finely
Why this is right
This gets the central topic of "fine tuning" right, and it gets the Challenge Position vibe right. People thought our universe was so delicately in balance because they were only changing one constant at a time. But this author found out that by changing several constants at once she has "identified numerous scenarios where the physical laws would be very different from our own and yet compatible with the formation of complex structures and perhaps even some forms of intelligent life." If we were surprised that the correct answer doesn't address the multiverse, that's fair. A better answer could have brought in that subsidiary theme. But, when we think about why did the author sit down to write this passage, it was because she had found out that the way scientists have been thinking about fine tuning was wrong. She doesn't necessarily think the way that scientists have been thinking about the multiverse is wrong (insofar as she thinks the multiverse theory could still turn out to be correct). So if she only had one thing she could communicate, it would be the discovery that her and her colleague made: by manipulating multiple constants at once, you can find a bunch of hypothetical universes that would be similarly "fine tuned" like ours.
Skill tested: Main Point · how this choice captures the passage's function is the move to repeat next time.
68% picked this
Although the multiverse hypothesis was
Wrong Emphasis
All of this is true, but this answer is focused on the multiverse, which was not the main character of the passage. What is the first paragraph about: the multiverse or fine tuning? What about the second paragraph? Every paragraph involves fine tuning, but only the 3rd and 6th discuss the multiverse.
16% picked this
When scientists have tried modeling
Too Narrow
This is just the background, the Old, the Position being challenged. It's not the author and her colleague's new discovery. It's not the new idea that challenges the position. This answer expresses the background context of the passage, but the foreground is that, "When me and my colleague tried modeling hypothetical universes by altering physical laws, we found that we were quite able to find alternate sets of laws that are consistent with life!"
1% picked this
The improbability of life occurring
Opposite
The whole point of this passage is to Challenge the position being expressed here. Some cosmologists (not our author) have taken the improbability of life occurring in the universe to support the idea of the multiverse. Our author, starting in the 4th paragraph, begins her challenge: Is it actually improbable that life occurs in the universe? "Just how exceptional is the set of physical laws governing our universe"? The author proceeds to explain her method of finding other possible universes, and realizes that the reader might be thinking, "Oh, well if the author has basically contradicted the evidence some cosmologists were invoking as indirect evidence for the multiverse, do her findings therefore call the concept of the multiverse into question?" The author is saying, "No, there still may be good reasons to believe in a multiverse. But improbability of life occurring in the universe doesn't seem to be a good reason any more."
9% picked this
The story of our universe
Too Narrow
The action movie analogy was just a stage-setting attention getter. It's not actually a main point. The author and her colleague have made an important discovery, and the point of this passage is to report to the world on their discover: it's not actually as hard as we thought to generate an alternate set of physical laws that would be compatible with complex life
6% picked this

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