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No one knows what purposes, if any, dreams serve, although [#permalink]
24 Feb 2005, 08:31
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No one knows what purposes, if any, dreams serve, although there are a number of hypotheses. According to one hypothesis, dreams are produced when the brain is erasing â€œparasitic connectionsâ€
OA is C and D. I am not able to understand this part "This fact provides some confirmation for the parasitic-connection hypothesis, since the hypothesis predicts that for an animal that did not dream to have an effective memory that animal would need extra memory space for the parasitic connections."
Are you guys taking lot of time or is it just me? S
oops, didn't know u already had posted the OA.
1)...stem clearly says that normally almost all mammals except one dreams, of which the hypotheses says that it clears up bad data just like running a data clean up software in ur computer. It also says that, if that was not the case it wud lead to clogged memory (like "Insufficient memory error" message from ur computer) . "C" makes perfect sense that if dreaming is stopped the memory will be filled up with bad data and will not perform well.
2)...reason of large brain size of anteatar is not understood as compared to other mammals. This hypotheses provides an expl that in order to store so much of data (as cleaning process doesn't happen for this animal because it doesn't dream), it has to have a larger brain. "D" is the choice.
Humans have extra space to store parasitic connections. Since we have space to store these connections we probably use that space to store those connections till we sleep and in the sleep we erase them. The fact that we dream confirms that we have extra space to store those connections.
but the anteater does not dream and hence there is no erasing of parasitic connections. Since there is no erasing of parasetic connections that animal probably does not have extra space for those connections.
The claim of the argument is any animal to have a usable memory and still have parasitic connections then there must be extra space to store those connections. Otherwise the whole memory will be clogged and will become unusable.
For the second question:
(C) A hypothesis about the purpose of an action or object is confirmed when it is shown that the hypothesized purpose is achieved with the help of the action or object and could not be achieved without that action or object.
The action here is dreaming. The object is human. Purpose is erase accidental connection. (C) says a hypothesis is confirmed when it is shown the purpose is achieved with the action and the object and not achieved without the action or object. However the argument used something other than human's dreaming (anteater's brain size) to partially confirm the hypothesis.