Live GMAT classes with Target Test Prep start Nov 21 and Nov 22. First class free.

See classes
Target Test Prep · GMAT

Choose how you want to prepare

Learn live with an expert or move at your own pace. Every option includes the complete TTP study system.

Newsweek Readers’ Choice Awards 2026 winner: Target Test Prep, #1 Test Prep

Target Test Prep was voted #1 Best Test Prep in the 2026 Newsweek Readers’ Choice™ Awards.

★★★★★5.0563 reviews
GMATLiveTeachStarts Nov 22
Josh Braslow, Target Test Prep GMAT expert
LIVE ONLINE CLASSES

Get Ready for GMAT Test Day Faster with Live Online Classes

with Josh Braslow, 20+ years in test prep

Nov 22 · Josh Braslow
Sun · 9:30 AM to 12:30 PM ET
Included
40 hours of live online classes + 6 months of TTP OnDemand
  • Attend the first class for free
  • Every class is recorded, so you never fall behind
View classes & enroll
Limited seats availableTarget Test Prep
EALiveTeachOnDemandStart anytime
EXECUTIVE ASSESSMENT

Target Test Prep EA OnDemand

Self-paced EA prep. Study on your schedule.

EXECUTIVE ASSESSMENT

with

165+ EA score guarantee
$05-day trial no automatic billing
Schedule
Included
40 hours of live online classes plus six months of access to the complete TTP EA OnDemand course.
  • 165+ EA Score Guarantee
  • 4,100+ Quant, Verbal, and Integrated Reasoning practice questions
  • 400+ hours of in-depth video lessons
  • 3,000+ step-by-step video solutions
View EA class & enroll Start free 5-day trial
Limited cohort · enrollment openTrial includes full course accessTarget Test Prep
GMATOnDemandStart anytime
SELF-PACED MASTERCLASS

Target Test Prep GMAT OnDemand

Complete access from day one. Study on your schedule.

715+ score guarantee
$0to start then $127/mo
  • Personalized study plan and analytics
  • Thousands of lessons and practice questions

Evaluation Question:

Expert replies
by [email protected] » Thu May 10, 2012 4:05 pm
Anders: The physical structure of the brain plays an important role in thinking. So researchers developing “thinking machines”—computers that can make decisions based on both common sense and factual knowledge—should closely model those machines on the structure of the brain.

Yang: Important does not mean essential. After all, no flying machine closely modeled on birds has worked; workable aircraft are structurally very different from birds. So thinking machines closely modeled on the brain are also likely to fail. In developing a workable thinking machine, researchers would therefore increase their chances of success if they focus on the brain’s function and simply ignore its physical structure.
In evaluating Yang’s argument it would be most helpful to know whether:

A. studies of the physical structure of birds provided information crucial to the development of workable aircraft.

B. researchers currently working on thinking machines take all thinking to involve both common sense and factual knowledge.

C. as much time has been spent trying to develop a workable thinking machine as had been spent in developing the first workable aircraft.

D. researchers who specialize in the structure of the brain are among those who are trying to develop thinking machines.

E. some flying machines that were not closely modeled on birds failed to work.



The OA is A.


somehow the evaluate questions have always given me a hard time... Variance Test is the way to go...


Just try this question as it is also different from the usual Evaluate questions.




[spoiler]Usually when you apply a variance test, you have to see the extreme situations such as if it is a 'yes' then it will strengthen the question and if it is a 'no' then it will weaken the question.

But the opposite can also happen. i.e when you say 100% yes to a question, it can weaken the argument and when you say a 100% no to a question, it can strengthen the argument.[/spoiler]

This is actually what is happening in the above example


I hope this helps...
IT IS TIME TO BEAT THE GMAT

LEARNING, APPLICATION AND TIMING IS THE FACT OF GMAT AND LIFE AS WELL... KEEP PLAYING!!!

Whenever you feel that my post really helped you to learn something new, please press on the 'THANK' button.
Join the discussion
Source: — Critical Reasoning |

by ice_rush » Thu May 10, 2012 7:52 pm
(A) for me.
Join the discussion

by Gaurav 2013-fall » Thu May 17, 2012 6:00 am
I thought that Yang's argument was -focus on the brain’s function and simply ignore its physical structure. . but it seems that the author wants to evaluate -no flying machine closely modeled on birds has worked; workable aircraft are structurally very different from birds.
How do we know which one is the argument for sure?
Join the discussion

by Birottam Dutta » Thu May 17, 2012 9:51 am
The argument is definitely that the scientists should concentrate on the functioning of the brain and not it's physical structure. In arriving at this conclusion, Yang uses the evidence that flying models do not resemble in structure, flying birds.

So, in order to evaluate this argument, it would be useful to ascertain whether any important information was gained through studying the physical structure of birds, while developing the working model of the aircraft.

Hence, A!
Join the discussion