: : : Actually I'm inclined to believe the proverb that knowledge is power. Can you imagine what you could do with the power to know events before they happen? You could prevent many tragedies from befalling those we hold dear.

: : snip

: : Actually, as soon as you impacted one thing, the entire history would have been changed, and you would no longer be able to have an impact. Or, the impact that you had may in turn, result in several very bad things happening, and a greater tragedy overall.

:
: hmm... shades of "A Connecticut Yankee" perhaps?

To enter Middle-Earth you would have to become a part of it, and therefore you would become subject to the laws governing such a place - the laws governing Middle-Earth are that it is a fantsy creation of Tolkein, and thus your actions in such a place would be subject to the will of Tolkein, you would become a character in his story, only able to act independantly in his subcocious (see Sophie's World, Jostein Gaarder for where I get these ideas)
Don Quixote (a living fantasy)