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A scientific theory is a good theory if it satisfies two

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A scientific theory is a good theory if it satisfies two [#permalink] New post 12 Apr 2004, 12:21
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C
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E

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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's 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 predictions. Thus, Aristotle's 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's 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's cosmological theory described a large class of observations in terms of only four elements.
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 [#permalink] New post 12 Apr 2004, 13:03
Paul wrote:
B)


Paul, would you please tell me your reasoning behind choosing the answer?
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 [#permalink] New post 12 Apr 2004, 14:02
I used POE. All the other answers must be true and B seems very dubious. The following are excerpts all taken from the text to justify why they are good.

A)A scientific theory is a good theory if it ... make definite predictions about the results of future observations
B)Cannot be infered from given facts
C)It has to be true if Aristotle's theory satisfied the first criterion
D)A scientific theory is a good theory if ...is simple enough to contain only a few elements
E)Aristotle's cosmological theory, which claimed that everything was made out of...
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 [#permalink] New post 12 Apr 2004, 14:38
Hi Paul,

I would like to know why E is not good. My choice is E.

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 [#permalink] New post 12 Apr 2004, 15:05
anandnk wrote:
Hi Paul,

I would like to know why E is not good. My choice is E.

Anand.


I'm not Paul, nor I can reason like Paul. But, Let me try anyway!
(Following the foot steps of high achievers!)

What E says is

Aristotle's cosmological theory described a large class of observations in terms of only four elements.

and the stem says

Aristotle's cosmological theory, which claimed that everything was made out of four elements---earth, air, fire, and water---satisfied the first requirement

Basically, the choice E restates the stem, inwhich "everything" is
reworded as "large class of observations". What it means is that
what we see in the world (any observation) is made of four elements.

The question is an "EXCEPT" question. Thus, E should be discarded.
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 [#permalink] New post 12 Apr 2004, 17:05
Kpadma, you impersonated me pretty well 8-) As you said, "everything" in the stem is the keyword which links it to E. :)
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 [#permalink] New post 12 Apr 2004, 17:21
oh no! I totally missed the word EXCEPT
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 [#permalink] New post 12 Apr 2004, 19:15
Great guys.
OA is : B
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  [#permalink] 12 Apr 2004, 19:15
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