People say time is man-made because it is interpreted by man. There once was some person (or more persons) who recognized time and made a calendar.
Some people believe our universe runs backwards. The Big Bang is the end, and now we are moving to the beginning.
That actually is impossible because man gave the definition to the word 'time' meaning that the Big Bang was first, because we experience it to be
first. Therefore, 'time' is something with a manmade definitinon.
"Time" is just another dimension, like length, width and heigth and those other 7 dimensions quantum physics believe in...
Truth still remains, that time is simply in your mind, it only exists because you believe it does. It's a secundair dimension as I like to call it, a
dimension you do not primarily move trough with your body, but with your mind, if you don't bother the time and do those fun things that allow you
not to think of time, time goes fast. If you think of it, and you do bored things that makes you think of time (like when you bored, you constantly
think, when is it going to be over), time goes slowly.
I said you do not primarily move trough time with your body, you do actually, but you wouldn't notice it. Your body ages and grows old because it
also moves through this dimension.
But like walking through the mud and then walk back around it (in 3D), the mud will stay on your shoes. This simply means that what you did, can't be
undone, if you smacked someone in the face you can go back in time (yet we don't know how), but he will still be smacked in the face. If you're body
has aged, and you move back in time, you're body will still be aged.
Returning to your own time will indeed be in a diffrent universe. If person A sends person B to the year 1848 and tells the politics not to seperate
church and politics, when person B returns the world would be diffrent, while person A would still walks the world where nothing happened, amd might
not even see person B back again.
Glad to have pointed some things out
[edit on 8-6-2007 by Forest Lion]