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Director
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Someday computers may bee able to "see" forms, just as they [#permalink]
 01 Feb 2005, 07:23
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Someday computers may bee able to "see" forms, just as they now can be made to recognize voices, a problem of perception that is similar to artificial vision, but the solution has proved easier.
(A) that is similar to artificial vision, but the solution has proved easier
(B) that is similar to artificial vision but one that has proved easier to solve
(C) similar to that of artificial vision but it has proved easier to solve
(D) similar to that of artificial vision, but the solution has proved easier
(E) similar to that of artificial vision but one that has proved easier to solve
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Manager
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Stuck between c and e.
I choose e 
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Senior Manager
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qhoc, you seem to have mined the toughest ones today! This is a toughie!
I'll go with (D)
... a problem similar to that of artificial vision, but the solution (to which) has proved easier
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Director
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Any more try?
So far I see (D) and (E)
Please explain your positions.
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SVP
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I think it's (B), it fits parallel structure. A problem that is similar to something, but one (meaning the problem) that has proved to be....
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Director
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Surprisingly, OA is (E)
Any good explaination?
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Manager
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A.
The use of 'that' in c,d,e options is incorrect.
In b, i am not sure that the use of generic pronoun 'one' is correct. So, going with A.
There are a couple of elliptical elements in play here as well.
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SVP
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Ok I got it. First eliminate A, C, D on grounds of the problem has proved etc.
Choosing bt B and E. B is wrong because it says the problem is similar to artificial vision, in fact, the problem should be similar to the problem of the artifical vision, so "that of" is a necessary.
Dumb me.
[edit] typo.
Last edited by HongHu on 01 Feb 2005, 10:23, edited 1 time in total.
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Director
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A) that is similar to artificial vision, but the solution has proved easier
not correct formation of sentence.. that is redundant prior to similar.
(B) that is similar to artificial vision but one that has proved easier to solve
same as above
(C) similar to that of artificial vision but it has proved easier to solve
out because of "it"
(D) similar to that of artificial vision, but the solution has proved easier
(E) similar to that of artificial vision but one that has proved easier to solve
we are talking about one on one comparison and talking about the solution for one which one was easier to solve.. in D.. it doesn't address "one"
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Manager
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good question.
I am not sure about the redundancy of that before similar.
'that of' sets off a noun to noun comparison which is being tested in this q.
Also, the subject on either side of the coordinating conjunction 'but' must be the same. this principle is violated when you make the subject of the second clause 'solution'. has proved is obviously wrong and i am not sure what I was thinking earlier.
E makes sense.
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Re: SC - artificial vision [#permalink]
01 Feb 2005, 11:18
qhoc0010 wrote: Someday computers may bee able to "see" forms, just as they now can be made to recognize voices, a problem of perception that is similar to artificial vision, but the solution has proved easier.
(A) that is similar to artificial vision, but the solution has proved easier
(B) that is similar to artificial vision but one that has proved easier to solve
(C) similar to that of artificial vision but it has proved easier to solve
(D) similar to that of artificial vision, but the solution has proved easier
(E) similar to that of artificial vision but one that has proved easier to solve
Hello, I go with E.
First I eliminate A and B due to illogical comparsion. We need that
(D) is awkward. I think no one would say like that. 
It should be something is easy to solve. Need no passive voice.
Between E and C. I think C is not parallel for the usage of but.
(C) perception ....(adj. phrase) but .....(clause)
(E) perception ....(adj phrase) but .....(phrase rather than clause)
How do you think?
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Senior Manager
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E...
A and B you can quickly eliminate because of "that"...it is a problem of perception similar to that of artificial vision not a problem of perception that is similar to artificial vision because that would imply that artificial vision is in itself a problem of perception.
This leaves C, D and E.
You can elimiate C because the "it" in "it has proved easier to solve" could refer to artificial vision or recognizing voices
D you can elimate because "the solution has been proved easier" is unidiomatic
leaving E.
_________________
"No! Try not. Do. Or do not. There is no try.
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Re: SC - artificial vision [#permalink]
01 Feb 2005, 12:10
chunjuwu wrote: How do you think?
Wrong grammar.  (I think profoundly.  )
Should be: What do you think?
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Director
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OK, I still don't understand. Please help me out, here.
Someday computers may bee able to "see" forms, just as they now can be made to recognize voices, a problem of perception similar to that of artificial vision but one that has proved easier to solve.
Now, the red part is a "parenthecial element" right?
The part "similar to that of artificial vision but one that has proved easier to solve" is a phrase, correct?
My question is "Is there ellipsis here?" I think "being" is omitted.
-> "being similar to that of artificial vision but one that has proved easier to solve"
I know GMAT does not like "being". But I just want to understand the grammar part here since this one constructs like "[noun] + [adj] + [phrase]"
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Director
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The rule I know is you cannot use "one" if there is no "one" in the preceding sentence.
If this is the case, how can E be right?
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Director
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qhoc0010 wrote: OK, I still don't understand. Please help me out, here.
Someday computers may bee able to "see" forms, just as they now can be made to recognize voices, a problem of perception similar to that of artificial vision but one that has proved easier to solve.
Now, the red part is a "parenthecial element" right?
The part "similar to that of artificial vision but one that has proved easier to solve" is a phrase, correct?
My question is "Is there ellipsis here?" I think "being" is omitted.
-> "being similar to that of artificial vision but one that has proved easier to solve"
I know GMAT does not like "being". But I just want to understand the grammar part here since this one constructs like "[noun] + [adj] + [phrase]"
Can someone put some comment on my questions above?
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