QUOTE(MID @ Jun 23 2007, 12:16 PM)

The statement "time does not exist" poses a difficult quandary.
Time actually exists only in respect to the fact that it is a man-made construct, a system designed to keep track of things.
Time exists in that respect alone.
So, in a way, you're correct, but in another, you're incorrect.
You see, the confusion manifests in your own argument when you say that time does not exist when you have no time, but time exists (?). Which is it?
In a much more profound sense, time does not exist. There is only the present moment!
Being able to replay the past in your mind is a function of the mind's ability to store information, just as a computer file you create can, and does preserve your actions of the past. That has nothing to do with the principal of time not existing as a real thing. When you're looking at the file again, you're seeing registrations of data placed there before, but you're viewing it strictly in the present moment.
When the OP says, we can see the past by looking at the stars, he is absolutely correct.
However, we're seeing what the state of something that was --perhaps millions or billions of years ago--but in your present moment, much as you can look at your diary (if you have one) and read about yourself 20 years ago, say. You're viewing the you that existed then, but it's in the present moment.
Everytime you read a book, technically, you're looking into the past. When you look at that supernova that's 4000 LY distant, you're doing the same thing. In the now, which is all that really exists anywhere, you're seeing the star's "now" of 4000 years ago. That seeing is your "now". The star's "now", in respect to yours, is much different.
See how wild this is?
Look at a movie, read a book, call up a memory...all of it is in the now.
Time doesn't exist at all in that respect.
It is, essentially a constructed measurement system so we may reference processes and events. It is a useful tool for science, but it is a tool. The tool is a reality, but it is not a tangible in that it doesn't describe something in the moment...which is the only thing that actually exists.
It's a philosophical discussion actually. A great mental exercise!
Agreed, it is a great mental exercise, and one that classical astrologers have been conducting for centuries (no pun intended MID). However, MID is correct in the sense that what we call the "present" is indeed the only moment; however, "time" does exist, and must, according to astrophysical laws; i.e., the motion of the Sun, and the planets, which is the reason for time existing as it does.
Yet, there have been those of the past, who have maintained that the past, present, and future are all one, yet with different roads leading along paths as determined by the motions of the planets, and the stars, and, of course, our own experiences of what we call time itself.
Memory, according to some, are experiences stored within ourselves, and not just within what we call our minds, but also within our stellar cells, which all living things have, including himan beings. Time does exist, but is also composed of what we would call the eternal present (from our collective experience) and according to some very interesting theories of physics, such as the Einstein-Rosen bridge, time itself could be bent, in that the past would exist slightly along with the present, and anything conducted between the two would determine "a future."
Time is measured by astronomic motions. Our sense of time is measured by the motion of the Earth around the Sun, which accounts for the seasons we experience on this planet in both hemispheres. Time
does exist, however, they are many levels of time itself. I utilize the motions of planets in ephemeris time to forecast events, the weather, etc., according to these laws of time and space.
All in all, yes, a very interesting discussion.