"The theory is that if you impale a unicorn with it's own horn, it dies."
My answer is
Yes.
My rationale for the answer is below including the research I did the come up with the answer.
One thing science cannot do, even in principle, is disprove the existence of anything. So when people try to use science to disprove the existence of unicorns or they they can be killed by their own horns, they're using science illegitimately. They're misusing it, and this just makes science look bad.
http://www.str.org/site/News2?page=NewsArticle&id=5559
So I cannot rule out the existence of unicorns even though there is no evidence of their existence. This is only relevent to the question as I need to know what a unicorn is.
Since one has never been discovered, that modern man is aware of a few assumption need to be made.
- Without a detailed scientific profile of a unicorn I shall rely on this source for the definition of a unicorn and it attributes
http://en.wikipedia.org/wiki/Unicorn
Which states:
that all its strength lies in its horn
Cosmas Indicopleustes, a merchant of Alexandria, who lived in the 6th century, and made a voyage to India, and subsequently wrote works on cosmography, gives a figure of the unicorn, not, as he says, from actual sight of it, but reproduced from four figures of it in brass contained in the palace of the King of Ethiopia. He states, from report, that "it is impossible to take this ferocious beast alive; and that all its strength lies in its horn. When it finds itself pursued and in danger of capture, it throws itself from a precipice, and turns so aptly in falling, that it receives all the shock upon the horn, and so escapes safe and sound."[9][10]
- While a virgin is not required to answer the question, I'll throw one in for good measure - we know they exist but are rare.
The myths refer to a beast with one horn that can only be tamed by a virgin
The unicorn, through its intemperance and not knowing how to control itself, for the love it bears to fair maidens forgets its ferocity and wildness; and laying aside all fear it will go up to a seated damsel and go to sleep in her lap, and thus the hunters take it.
- By impale I assume that this impalement will penetrate the heart or vital organ. This was not specific in the question.
- The question does not demand how the unicorn is impaled and therefore doesn't need it's removal or if it is possible to impale while attached to the uncorn - so this is not addressed.
So my logic goes simply like this:
"The theory is that if you impale a unicorn with it's own horn, it dies."
The horn is where all the uncorns power is.
The horn will have the power to penetrate the unicorn.
The question does not indicate ifthe impalement peirces vital organs - I will assume it does. (if not, then it may not die as is the case with any other animal)
Since the horn contains all of it's power then it has the power to kill the unicorn. The unicorn will die based on the assumption provided above.
FD: Any questions?