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Since the deregulation of airlines, delays at the nation's increasingl 02 Jul 2022, 09:24
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jabhatta2
If bad weather and overtaxed air traffic control equipment were major causes of delays PRIOR to the de-regulation -- then how can this same cause be responsible for the 25 % increment in delay specifically (remember the 25 % increment in delay happened AFTER the de-regulation)

We can't say for sure if the (blue) is causing the 25 % increment in delay, which occurred after de-regulation

Need to find what was the cause for the 25 % increment in delay specifically

I think given this doubt -- my instinct was to choose (B) over (A)
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Let’s call the pre-de-regulation delay 100%, so after the increase we have a delay of 125%. You’re saying, jabhatta2, that we don’t know whether the blue refers to the first 100%, the last 25%, or some combination. Can you further elaborate on the impact of these distinctions with regards to how much doubt is cast on the effectiveness of the proposed solution? I’m failing to see the impact.

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Since the deregulation of airlines, delays at the nation's increasingl 02 Jul 2022, 18:06
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avigutman
jabhatta2
If bad weather and overtaxed air traffic control equipment were major causes of delays PRIOR to the de-regulation -- then how can this same cause be responsible for the 25 % increment in delay specifically (remember the 25 % increment in delay happened AFTER the de-regulation)

We can't say for sure if the (blue) is causing the 25 % increment in delay, which occurred after de-regulation

Need to find what was the cause for the 25 % increment in delay specifically

I think given this doubt -- my instinct was to choose (B) over (A)
Let’s call the pre-de-regulation delay 100%, so after the increase we have a delay of 125%. You’re saying, jabhatta2, that we don’t know whether the blue refers to the first 100%, the last 25%, or some combination. Can you further elaborate on the impact of these distinctions with regards to how much doubt is cast on the effectiveness of the proposed solution? I’m failing to see the impact.

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Hi Avi - Per the screenshot - i got the impression this problem (highlighted in yellow in the argument in the screenshot) was referring back to the 25 % delay.

When you read this problem (highlighted in yellow in the argument) - did you think this problem was referring to the 25 % delay or the 125 % TOTAL delay ?

I personally thought this problem in the CR argument it was talking about the 25 % increment delay.

Thus - we had to find the cause BEHIND the 25 % delay first AND THEN weaken that cause specifically.

(A) gives me a cause for the 125 % delay.
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Since the deregulation of airlines, delays at the nation's increasingl 02 Jul 2022, 19:52
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jabhatta2
When you read this problem (highlighted in yellow in the argument) - did you think this problem was referring to the 25 % delay or the 125 % TOTAL delay ?

I personally thought this problem in the CR argument it was talking about the 25 % increment delay.

Thus - we had to find the cause BEHIND the 25 % delay first AND THEN weaken that cause specifically.

(A) gives me a cause for the 125 % delay.
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I didn’t make that differentiation, jabhatta2. Delay is delay. I don’t care where the EXTRA delay came from, I just want to have less delay overall. When you win money in the casino, you shouldn’t think of that money as “the casino’s money”, because you’re more likely to gamble it away or spend it on stuff you don’t need. Money is money. This is your money now. Who cares where it came from.
If the busy airport hires an MBA (you) to figure out whether their solution would be effective, would you measure the effectiveness depending on “which part of the delay” it addresses?

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Since the deregulation of airlines, delays at the nation's increasingl Updated on: 22 Sep 2022, 13:28
Originally posted by jabhatta2 on 22 Sep 2022, 13:03.
Last edited by jabhatta2 on 22 Sep 2022, 13:28, edited 2 times in total.
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The biggest issue I see with (A) is the following.

Here is the arguement once again:

Quote:

Since the deregulation of airlines, delays at the nation's increasingly busy airports have increased by 25 percent. To combat this problem, more of the takeoff and landing slots at the busiest airports must be allocated to commercial airlines.
Show more

Focussing on the yellow, the proposed solution just has to "Combat this problem"

The proposed solution [more allocations to commercial airlines] DOES NOT HAVE REVERSE ALL OF THE 25 % delay.

Even if the solution can alleviate "some" of the delay, the proposed solution is a success.

Now, the issue with (A) is :

(A) by itself DOES NOTHING TO SUGGEST that the proposed solution (increased allocations) WONT work (by a little bit at-least)

Hence i knoced out (A)
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Since the deregulation of airlines, delays at the nation's increasingl 22 Sep 2022, 13:27
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Quote:
Analogy :

Ever since John moved into the room, the room smells. To combat this problem, we need to notify John that his pets cannot enter the home.

Which of the following, if true, casts the most doubt on the effectiveness of the solution proposed above?

(A) major causes for the smell are John's cooking and John's smoking
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Now, cooking and smoking maybe is the cause of the majority of the smell.
But its possible that the removing his pets WILL combat the problem of the smell BY A LITTLE BIT AT-LEAST.

Will it solve MOST OF THE SMELL problem ? No

But removing john's pet could solve SOME of the smell problem
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Since the deregulation of airlines, delays at the nation's increasingl 22 Sep 2022, 14:00
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jabhatta2
The biggest issue I see with (A) is the following.

Here is the arguement once again:

Quote:

Since the deregulation of airlines, delays at the nation's increasingly busy airports have increased by 25 percent. To combat this problem, more of the takeoff and landing slots at the busiest airports must be allocated to commercial airlines.

Focussing on the yellow, the proposed solution just has to "Combat this problem"

The proposed solution [more allocations to commercial airlines] DOES NOT HAVE REVERSE ALL OF THE 25 % delay.

Even if the solution can alleviate "some" of the delay, the proposed solution is a success.

Now, the issue with (A) is :

(A) by itself DOES NOTHING TO SUGGEST that the proposed solution (increased allocations) WONT work (by a little bit at-least)

Hence i knoced out (A)
Show more
Hi jabhatta2.

Notice that the conclusion is "To combat this problem, more of the takeoff and landing slots at the busiest airports must be allocated to commercial airlines."

If what (A) says is true, then it is not the case that, to combat the problem, more of the takeoff and landing slots at the busiest airports MUST be allocated to commercial airlines. After all, in that case, most of the delays are caused by other things. So, even if takeoff and landing slots are NOT allocated, it is still possible to combat the problem.
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Since the deregulation of airlines, delays at the nation's increasingl 22 Sep 2022, 16:11
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jabhatta2
The biggest issue I see with (A) is the following.

Here is the arguement once again:

Quote:

Since the deregulation of airlines, delays at the nation's increasingly busy airports have increased by 25 percent. To combat this problem, more of the takeoff and landing slots at the busiest airports must be allocated to commercial airlines.

Focussing on the yellow, the proposed solution just has to "Combat this problem"

The proposed solution [more allocations to commercial airlines] DOES NOT HAVE REVERSE ALL OF THE 25 % delay.

Even if the solution can alleviate "some" of the delay, the proposed solution is a success.

Now, the issue with (A) is :

(A) by itself DOES NOTHING TO SUGGEST that the proposed solution (increased allocations) WONT work (by a little bit at-least)

Hence i knoced out (A)
Hi jabhatta2.

Notice that the conclusion is "To combat this problem, more of the takeoff and landing slots at the busiest airports must be allocated to commercial airlines."

If what (A) says is true, then it is not the case that, to combat the problem, more of the takeoff and landing slots at the busiest airports MUST be allocated to commercial airlines. After all, in that case, most of the delays are caused by other things. So, even if takeoff and landing slots are NOT allocated, it is still possible to combat the problem.
Show more

Hi MartyTargetTestPrep - Thank you for responding

In order to weaken the effectiveness of the proposed solution , dont you have to proove that allocating more of the takeoff and landing slots to commercial airlines. IS NOT going to be able to reduce the 25 % delay ?

I dont see how the underline is inferable just because the causes of the delay are different.

It's possible that the proposed solution will be effective EVEN THOUGH the cause the problem is something different.

below is an analogy of what i mean

===========

Quote:
Analogy :

Ever since John moved into the room, the room smells. To combat this problem, we need to notify John that his pets cannot enter the home.

Which of the following, if true, casts the most doubt on the effectiveness of the solution proposed above?

(A) major causes for the smell are John's cooking and John's smoking in the room
Show more

Now, cooking and smoking maybe is the cause of the majority of the smell.
But its possible that the removing his pets WILL combat the problem of the smell BY A LITTLE BIT AT-LEAST.

Will it solve MOST OF THE SMELL problem ? No

But removing john's pet could solve SOME of the smell problem
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Since the deregulation of airlines, delays at the nation's increasingl 22 Sep 2022, 23:22
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Quote:
Analogy :

Ever since John moved into the room, the room smells. To combat this problem, we need to notify John that his pets cannot enter the home.

Which of the following, if true, casts the most doubt on the effectiveness of the solution proposed above?

(A) major causes for the smell are John's cooking and John's smoking

Now, cooking and smoking maybe is the cause of the majority of the smell.
But its possible that the removing his pets WILL combat the problem of the smell BY A LITTLE BIT AT-LEAST.

Will it solve MOST OF THE SMELL problem ? No

But removing john's pet could solve SOME of the smell problem
Show more

The point is that your correct option should weaken the plan a LITTLE BIT AT LEAST. Not that the plan should work a little bit at least.

You have to pick the best option. Even if you believe that giving more slots may combat the problem a little bit for which you are assuming that fewer than required slots is at least part of the problem (even if other factors are majorly in play), what other option does a better job of weakening the effectiveness of the plan?
No other option weakens the possibility of the plan succeeding. Option (A) works because if the cause of the problem is something else (say even some of the current available slots are free but storms cause delays) then giving more slots is useless.
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Since the deregulation of airlines, delays at the nation's increasingl 23 Sep 2022, 00:12
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jabhatta2
Hi MartyTargetTestPrep - Thank you for responding

In order to weaken the effectiveness of the proposed solution , dont you have to proove that allocating more of the takeoff and landing slots to commercial airlines. IS NOT going to be able to reduce the 25 % delay ?

I dont see how the underline is inferable just because the causes of the delay are different.

It's possible that the proposed solution will be effective EVEN THOUGH the cause the problem is something different.
Show more
You are missing what the conclusion is.

The conclusion is "To combat this problem, more of the takeoff and landing slots at the busiest airports MUST be allocated to commercial airlines."

If there are other causes of delays, and those causes are, as the passage says, "THE MAJOR CAUSES," then it is not the case that solving the problem REQUIRES allocating more of the slots to commercial airlines.

Another way to look at the question is to see that "MUST BE ALLOCATED" implies that the problem will be solved in a significant way through the allocation of the slots to commercial airlines. So, the information that (A) provides, that THE MAJOR CAUSES are other causes, serves to cast doubt on the implications of argument in addition to the stated conclusion.
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Since the deregulation of airlines, delays at the nation's increasingl 07 Mar 2025, 07:07
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Hi ChiranjeevSingh GMATIntensive

Can we also reject option D on the basis of reasoning that what worked with small mid sized airport might not work with the nation's busiest airports. In simple words, A doesn't represent B so this option doesn't impact our confidence much. Please let me know your thoughts.

ChiranjeevSingh
(D) After a small mid western airport doubled its allocation of takeoff and landing slots, the number of delays that were reported decreased by 50 percent.

Incorrect. Let’s first consider the following version of option D:

D1: After a small mid western airport doubled its allocation of takeoff and landing slots to commercial airlines, the number of delays that were reported decreased by 50 percent.

D1 says that allocating more slots to commercial airlines led to a reduction in delays at some airports. Thus, D1 supports the effectiveness of the proposed solution.

However, option D is about increasing the overall number of slots, i.e., increasing the capacity of the airport. Thus, option D is talking about a different way to reduce the delays.

Whether this different way worked or not has NO IMPACT on whether our proposed solution is an effective way.
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