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Johnathan:  I would have posted this as a comment under Brittany's post, but I felt it was too long to put there, hehe. "Time" is an interesting subject (and one that I was contemplating a mere few months ago, actually). I came up with an interesting theory, however stereotypical it might get, hehehe...
Think back to your childhood... remember how you were always bored? Car rides took forever. You felt as if you were faster than the wind and nothing could outrun you. For the most part, time seemed to proceed no faster than a crawl. Now think about the present day... You never have enough time to get everything done. You struggle to get things done "on time" and the world around you seems to whir by. Now here's my theory:
Perhaps time is relevant to size.
Take into your consideration "short" people (here's where it gets stereotypical, haha). I'm talkin really short people... like... shorter than, say, 5'4" (give or take a few inches). I don't know about you guys, but the shorter people I know are always bouncing off the walls. They have more energy than they know what to do with. Perhaps they really have the same amount of energy as us normal heighted people, but their time just seems to move more slowly (hence why they seem to move so fast to us).
Now let's take a look at big folks. Not just tall people. Big and tall people (maybe over 6'7"... not necessarily fat, though). Most of the bigger people I know tend to move and talk more slowly. Maybe it's because time seems to move more quickly to them and they therefore appear slower than us. Imagine a room with a really short person and a really big and tall person. I picture the tall person getting annoyed with the really small person because they won't stop going and going and going (no offense to any of you short folk out there ;)).
But why stop there? Take a look at insects. Most of them barely live a few days. But maybe what seems to be only a few days to us is really years to them. As hokey as it may be, I really found the end of the first "Men In Black" to be interesting, where it depicted our galaxy in a marble. Millenia could pass by in our time and it would only be a few blinks of the eye to some greater creature that's larger than we could imagine. Apply this concept to atoms, too. Look at how fast they revolve. How many times do electrons revolve in a second? Maybe that's the atom's equivalent to years...
Now before I start to get REALLY radical with this train of thought, I'd like to see what you guys have to say, haha. Keep in mind that these are just random "what if's" I thought of a few months ago and the theory probably has absolutely no REAL scientific backing. Just food for thought, I suppose :)
And again... I meant no offense to all of the really big and really small people out there. Nothin' but love <3