Lsat CR theory model

This topic has expert replies
Legendary Member
Posts: 2330
Joined: Fri Jan 15, 2010 5:14 am
Thanked: 56 times
Followed by:26 members

Lsat CR theory model

by mundasingh123 » Mon Aug 29, 2011 11:11 pm
A scientific theory is a good theory if it satisfies two requirements - it must accurately describe a large class of observations in terms of a model that is simple enough to contain only a few elements, and it must make definite predictions about the results of future observations. For example, Aristotle"Ÿs cosmological theory, which claimed that everything was made out of four elements - earth, air, fire, and water - satisfied the first requirement but it did not make any definite prediction. Thus, Aristotle"Ÿs cosmological theory was not a good theory.
If all the statements in the passage are true, each of the following must also be true EXCEPT:
(A) Prediction about the results of future observations must be made by any good scientific theory.
(B) Observation of physical phenomena was not a major concern in Aristotle"Ÿs cosmological Theory
(C) Four elements can be the basis of a scientific model that is simple enough to meet the Simplicity criterion of a good theory.
(D) A scientific model that contains many elements is not a good theory
(E) Aristotle"Ÿs cosmological theory described a large class of observations in terms of only four elements.
I Seek Explanations Not Answers
Source: — Critical Reasoning |

User avatar
Legendary Member
Posts: 1101
Joined: Fri Jan 28, 2011 7:26 am
Thanked: 47 times
Followed by:13 members
GMAT Score:640

by HSPA » Mon Aug 29, 2011 11:19 pm
I am with B
First take: 640 (50M, 27V) - RC needs 300% improvement
Second take: coming soon..
Regards,
HSPA.

Legendary Member
Posts: 2789
Joined: Tue Jul 26, 2011 12:19 am
Location: Chennai, India
Thanked: 206 times
Followed by:43 members
GMAT Score:640

by GmatKiss » Mon Aug 29, 2011 11:22 pm
HSPA wrote:I am with B
Can you please post your choice with reasoning!

From MUNDASINGH
I Seek Explanations Not Answers!!

User avatar
Legendary Member
Posts: 1101
Joined: Fri Jan 28, 2011 7:26 am
Thanked: 47 times
Followed by:13 members
GMAT Score:640

by HSPA » Mon Aug 29, 2011 11:28 pm
I did a POE :)

A) requirement 2
C) implicit requirement for rqmt 1
E) same as C
D) One more implicit requirement for rqmt 1
GmatKiss wrote:
HSPA wrote:I am with B
Can you please post your choice with reasoning!

From MUNDASINGH
I Seek Explanations Not Answers!!
First take: 640 (50M, 27V) - RC needs 300% improvement
Second take: coming soon..
Regards,
HSPA.

User avatar
Master | Next Rank: 500 Posts
Posts: 143
Joined: Sat Nov 06, 2010 9:06 pm
Thanked: 10 times
Followed by:1 members

by edvhou812 » Mon Aug 29, 2011 11:55 pm
mundasingh123 wrote:A scientific theory is a good theory if it satisfies two requirements - it must accurately describe a large class of observations in terms of a model that is simple enough to contain only a few elements, and it must make definite predictions about the results of future observations. For example, Aristotle"Ÿs cosmological theory, which claimed that everything was made out of four elements - earth, air, fire, and water - satisfied the first requirement but it did not make any definite prediction. Thus, Aristotle"Ÿs cosmological theory was not a good theory.
If all the statements in the passage are true, each of the following must also be true EXCEPT:
(A) Prediction about the results of future observations must be made by any good scientific theory.
(B) Observation of physical phenomena was not a major concern in Aristotle"Ÿs cosmological Theory
(C) Four elements can be the basis of a scientific model that is simple enough to meet the Simplicity criterion of a good theory.
(D) A scientific model that contains many elements is not a good theory
(E) Aristotle"Ÿs cosmological theory described a large class of observations in terms of only four elements.
A (True) Said Aristotle's Theory was no good because it did not predict future observations

B (Hold it)

C (True) Said that Aristotle's theory that had four elements met the first requirement for a good theory

D (True) Article said "a model that is simple enough to contain only a few elements."

E (True) Aristotle's Theory classified things with Earth, Air, Fire and Water, or four elements.

Only one that didn't hold true is B, so that is the answer.
I don't know what to say, really. Three minutes to the biggest battle of our professional lives. You find out life's this game of inches, so is football. Because in either game - life or football - the margin for error is so small. I mean, one half a step too late or too early and you don't quite make it. One half second too slow, too fast and you don't quite catch it. I'll tell you this, in any fight it's the guy whose willing to die whose gonna win that inch. That's football guys, that's all it is. Now, what are you gonna do?

Legendary Member
Posts: 2330
Joined: Fri Jan 15, 2010 5:14 am
Thanked: 56 times
Followed by:26 members

by mundasingh123 » Tue Aug 30, 2011 12:30 am
GmatKiss wrote:
HSPA wrote:I am with B
Can you please post your choice with reasoning!

From MUNDASINGH
I Seek Explanations Not Answers!!
THATS RIGHT ! Thats COS THE TEST PREP COMPANIES MISTAKENLY INCLUDED THE ANSWER KEYS WITH THE QUESTIONS
I Seek Explanations Not Answers

User avatar
GMAT Instructor
Posts: 15539
Joined: Tue May 25, 2010 12:04 pm
Location: New York, NY
Thanked: 13060 times
Followed by:1906 members
GMAT Score:790

by GMATGuruNY » Tue Aug 30, 2011 8:33 am
mundasingh123 wrote:A scientific theory is a good theory if it satisfies two requirements - it must accurately describe a large class of observations in terms of a model that is simple enough to contain only a few elements, and it must make definite predictions about the results of future observations. For example, Aristotle"Ÿs cosmological theory, which claimed that everything was made out of four elements - earth, air, fire, and water - satisfied the first requirement but it did not make any definite prediction. Thus, Aristotle"Ÿs cosmological theory was not a good theory.
If all the statements in the passage are true, each of the following must also be true EXCEPT:
This is an inference question.
Inference = RC.
The four answers that must be true will be supported by lines in the passage.
The answer choice that remains will be the OA.

(A) Prediction about the results of future observations must be made by any good scientific theory.
A scientific theory is a good theory if it satisfies two requirements...it must make definite predictions about the results of future observations.
Eliminate A.

(C) Four elements can be the basis of a scientific model that is simple enough to meet the Simplicity criterion of a good theory.
Aristotle's cosmological theory, which claimed that everything was made out of four elements - earth, air, fire, and water - satisfied the first requirement [that it must accurately describe a large class of observations in terms of a model that is simple enough to contain only a few elements].
Eliminate C.

(D) A scientific model that contains many elements is not a good theory.
A scientific theory is a good theory if it satisfies two requirements - it must accurately describe a large class of observations in terms of a model that is simple enough to contain only a few elements.
Eliminate D.

(E) Aristotle's cosmological theory described a large class of observations in terms of only four elements.
Aristotle's cosmological theory, which claimed that everything was made out of four elements - earth, air, fire, and water - satisfied the first requirement [that it must accurately describe a large class of observations in terms of a model that is simple enough to contain only a few elements].
Eliminate E.

The correct answer is B.
Private tutor exclusively for the GMAT and GRE, with over 20 years of experience.
Followed here and elsewhere by over 1900 test-takers.
I have worked with students based in the US, Australia, Taiwan, China, Tajikistan, Kuwait, Saudi Arabia -- a long list of countries.
My students have been admitted to HBS, CBS, Tuck, Yale, Stern, Fuqua -- a long list of top programs.

As a tutor, I don't simply teach you how I would approach problems.
I unlock the best way for YOU to solve problems.

For more information, please email me (Mitch Hunt) at [email protected].
Student Review #1
Student Review #2
Student Review #3