Logical ReasoningDifficulty: Hard

PT144 S4 Q23 Explanation

Editor: The city's previous recycling

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Stimulus

Editor: The city's previous recycling program, which featured pickup of recyclables every other week, was too costly. The city claims that its new program, which features weekly pickup, will be more cost effective, since the greater the volume of recyclables collected per year, the more revenue the city gains from selling the it will just be spread out over a greater number of pickups.

What this question is testing

Weaken

Your task

Find the choice that makes the argument's conclusion less likely to be true.

Common trap

Answers that look negative but attack a claim the argument never relied on.

Winning move

Find the assumption the argument depends on, then pick the choice that undermines it.

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

The question
23.

Which one of the following, if true, most weakens the

Answer choices

  1. Strengthens, if anything2% picked this

    The cost of collecting and disposing of general trash has been less than the cost of collecting and disposing of recyclables, and this is

    In order to weaken this argument, which is saying "it's absurd to think this will be more cost effective: it will be same volume, just greater pickups", we need to be able to point to some difference that could save us money or make us revenue. This answer is stressing more sameness, so it would strengthen, if anything.

  2. Strengthens, if anything3% picked this

    Even if the volume of collected recyclables increases, that increase might not be enough to make the

    This helps the author to argue that this new program won't be cost effective, even if we did grant them the assumption they were making about the volume of collected recyclables increasing.

  3. Unclear Impact21% picked this

    Because the volume of recyclables people accumulate during a week is less than what they accumulate during two weeks, the city expects a recyclables

    This is somewhat tempting because it discusses a change, a difference, and that difference "takes less time to do the pickup" could be connected via common sense to being less costly. The problem is there are twice as many pickups in the new program (every week vs. every two weeks). So, yes, it takes less time to do pickups under the program, but since there are twice as many pickups, it would have to take less than 1/2 as much time as when it was bi-weekly, in order for us to get any time savings. Suppose that when we're picking up bi-weekly, it takes us 4 hours to do pickups in the Woodland Heights neighborhood. If switching to weekly pickups means that now it only takes us 3 hours to do pickups in that neighborhood, are we saving time? No, because we have to do 2 weekly pickups for every 1 bi-weekly pickup we used to do. So we'd be spending 6 hours every two weeks on Woodland Heights, whereas we used to spend 4 hours every two weeks. So the impact of this answer is unclear. If we thought we were cutting time by more than 1/2, then our overall time expended would be less and we could argue that we're being more cost effective that way. But since this answer doesn't say how much time we're saving, we might actually be spending more time doing pickups under the new program.

  4. Correct68% picked this

    A weekly schedule for recyclables pickup is substantially easier for people to follow and adhere to than is a schedule

    Why this is right

    There is a little bit of heft to this answer because it says substantially easier. It's suggesting that people would more reliably put out recyclables every week, if we switched to a weekly pickup. Thus, the city might really end up collecting more recyclables, and thus the city might gain more revenue from recyclables, thus making the program more cost effective. Do I have problems with this correct answer? Oh, GOODNESS do I have problems with it. First of all, it's surprisingly just contradicting the evidence. The author's premise was that people will put out the same volume of recyclables overall, just spread out over a greater number of pickups. This answer is calling that idea into questions, by saying that people have just a hard time remembering "Is this the week for recyclables or not?" that they (presumably) throw it in the (presumably) weekly garbage. It's not illegal or unprecedented for LSAT to go against a premise. There's no rule saying they can't. It's happened about 5 times. It's just so rare that we don't look for it. But we want to understand that it can happen so that we can at least interpret a stinkball answer like this one. My bigger problem, being a homeowner and a recycler, is the fact that we're supposed to think that because a pickup schedule is substantially easier for people to follow that this even really suggests that people will end up putting out more recyclables overall. When we miss a recyclable pickup at my house (or if we have too much for one pickup, like after Christmas), we don't throw that stuff away. We just keep stuffing our recycling bin for the next few pickups until we've gotten rid of all of it. This answer is definitely leaning on the idea that if people find it hard to remember when the recyclables are getting picked up, they will otherwise throw that stuff in the garbage. The important thing, I guess, is that as long as some people throw stuff in the garbage currently, because they can't remember the recyclable pickup schedule, then if they start recycling because the pickups become weekly and easy to remember, then the city does get a boost in volume of recyclables collected.

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

  5. Strengthens6% picked this

    Because of the increase in the number of pickups under the new program, the amount charged by the contractor that collects the

    This is bringing up a change that occurs with the weekly pickups, but it goes against being cost effective (the contractor will charge the city way more money for all these pickups), so it would just strengthen the author's conclusion.

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