순서배열 문제 연습

문제 1

Consider a large heap containing ten thousand grains of sand. (A) Something has clearly gone wrong along the way, since no reasonable person would call one grain of sand a heap, but pinpointing exactly which single removal transformed a heap into a non-heap seems impossible. (B) Nearly everyone agrees that removing a single grain from such a heap leaves another heap behind, since surely one grain could never make the difference between a heap and a non-heap. (C) Yet if this principle is applied repeatedly, grain by grain, the heap eventually shrinks to a single lonely grain, or even to no grains at all, and logic alone seems to force us to accept that this final result still counts as a heap.

문제 2

Suppose a mysterious being with a near-perfect track record of predicting human choices presents a player with two boxes. (A) The player may choose to take only Box B, or to take both boxes, and the prediction has already been made and cannot change. (B) Box A always contains a visible thousand dollars, while Box B contains either a million dollars or nothing at all, depending on a prediction the being made before the game even began. (C) One line of reasoning says taking both boxes is strictly better, since whatever is already inside the boxes cannot be altered by the player's choice at this point, while a second line of reasoning says taking only Box B is better, given the being's near-perfect accuracy.

문제 3

Imagine a brilliant scientist named Mary who has spent her entire life inside a black-and-white room, learning everything physical science could ever teach about color. (A) Despite this complete physical knowledge, Mary herself has never actually seen a color, since every book, screen, and object in her world has been carefully restricted to shades of gray. (B) Suppose that one day Mary is finally released from the room and shown a ripe red tomato for the first time. (C) Philosopher Frank Jackson argued that Mary would learn something entirely new at that moment, namely what it actually feels like to see red, even though she already possessed every physical fact about color.

문제 4

Philosophers often pair the classic trolley problem with a companion case designed to test whether our moral intuitions are actually consistent. (A) Philosophers use this contrast to argue that outcomes alone cannot fully explain our moral judgments; something about directly using a person's body as a mere means appears to matter deeply. (B) Yet almost everyone who accepts the trolley diversion recoils immediately at the idea of the surgeon cutting up an unwilling patient, even though the numbers are identical in both cases. (C) Imagine a brilliant surgeon who has five patients, each dying from the failure of a different organ, and one healthy visitor whose organs happen to be a perfect match for all five, so that killing the visitor would save five lives at the cost of one.

문제 5

Two drivers, equally distracted by their phones, run a red light in exactly the same careless manner. (A) Although both drivers behaved identically and made exactly the same reckless choice, society judges them very differently: one faces criminal charges and lifelong guilt, while the other receives, at most, a minor traffic ticket. (B) Philosophers call this troubling asymmetry moral luck, since factors entirely outside a person's control end up determining how severely we judge their moral character. (C) By pure chance, a child happens to be crossing the street in front of one driver but not the other, and the first driver kills the child while the second drives through safely.

문제 6

Political philosophers have long debated how much authority, if any, a government may legitimately claim over free individuals. (A) Critics on one side, the anarchists, insist that even this minimal government inevitably violates the rights of those who never consented to join it. (B) Robert Nozick imagined a hypothetical starting point in which people live without any state at all, each relying on private arrangements to protect their own person and property. (C) He argued that a minimal state, limited strictly to enforcing contracts and protecting citizens from violence, theft, and fraud, could arise gradually through a series of voluntary exchanges, without anyone's rights ever being violated along the way.

문제 7

Consider a village green shared freely by every herder in the community, where each individual may graze as many animals as they wish without paying any fee. (A) The cost of the additional grazing, however, is spread thinly across every herder who uses the green, so no single individual bears more than a tiny fraction of the damage. (B) From the perspective of any single herder, adding one more animal to the shared pasture brings a clear personal benefit, since the extra income belongs entirely to that herder alone. (C) Because this calculation favors adding more animals for every rational herder, the shared pasture is gradually overgrazed until it can no longer support any animals at all.

문제 8

Medieval philosophers told the story of a hungry donkey placed exactly midway between two identical, equally fragrant piles of hay, with no factor whatsoever tipping the balance toward either option. (A) Because the donkey is assumed to be a perfectly rational creature that always chooses the option supported by the strongest reason, it supposedly finds itself with no rational basis for choosing one pile rather than the other. (B) Paralyzed by this perfect symmetry, the donkey starves to death precisely because it can find no reason to move in either direction. (C) Critics of the story point out that real animals, and real humans, rarely face situations of such flawless symmetry, since even a tiny, arbitrary preference is usually enough to break the tie in practice.

문제 9

Time travel to the past has long fascinated physicists and philosophers alike, but it also generates a famously troubling contradiction. (A) The story therefore loops endlessly, undermining itself at every turn rather than settling into any stable outcome. (B) If the grandfather never had children, the traveler themselves would never have been born, and could never have existed to make the trip in the first place; yet if the traveler never made the trip, the grandfather would have survived to meet the grandmother after all. (C) Suppose a traveler journeyed backward in time and, through some combination of accident and intention, prevented their own grandfather from ever meeting their grandmother.

문제 10

Imagine a teleportation device that scans every atom in your body, transmits that information to a distant station, and reconstructs an exact physical duplicate there, while destroying the original body in the process. (A) Philosophers, however, are troubled by a version of the same device that malfunctions: instead of destroying the original, it leaves the original body intact while still creating a perfect duplicate elsewhere. (B) Now two people exist, each with identical memories and an equally strong claim to being the original traveler, and there is no principled way to decide which one is the real continuation of the person who entered the machine. (C) From the traveler's point of view, stepping into the machine and stepping out on the other side would feel utterly seamless, complete with continuous memories and a sense of having simply walked through a door.