Ok, let me simplify it for you. First, I have a very subtle thought experiment for you. Suppose someone you knew had a time machine with the limitation that it could only go forward in time (could not go back in time). And suppose further that the time machine looked exactly like a common wrist watch. It works by turning the stem which you would ordinarily expect to change the time on the watch. When the stem is turned, the wearer (and the wearer only) is transported to the new time indicated on the device.
Now suppose this friend goes to demonstrate his time machine. He says, "watch this, I will go five minutes into the future", and turns the reading on the device to five minutes ahead of what it reads.
Now, as an exact scientific observer, tell me exactly what you would expect to see. (We are writing this for a science fiction story and we want to be perfectly consistent.)
Have fun -- Dick
"The simplest and most necessary truths are the very last to be believed."
by Anonymous