I would put forth the age-old standby of supply and demand as more influential than any other effect, other than sentimental value; i.e. - even owning the only one of something would only have sentimental value (as opposed to market value) if nobody else wanted it.

Not surprised you couldn't find anything directly related to the questions. They are kinda wierd questions. Both seem to imply something I would not agree with, at least not as being universally applicable. I'm saying that putting a fence around something does not automatically makes it worth more (doggie do-do would be an extreme example). Same goes for owning something (the same extreme example applies).

I'm guessing this is for a composition or English class; not for econ.

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Don of Borg - Cool, Calm, Collective.

"Within the next generation I believe that the world's leaders will discover that infant conditioning and narco-hypnosis are more efficient, as instruments of government, than clubs and prisons, and that the lust for power can be just as completely satisfied by suggesting people into loving their servitude as by flogging them and kicking them into obedience." -- Aldous Huxley