Originally posted by MajinVegeta
Time is the increasing of entropy. Time coordinates tell you where (or rather when) something existed; that is, at what point of the increasing of entropy it existed.
Eh, would you please define which of 4 definitions of entropy you imply? Entropy is paradoxical in itself. You may call me heretic, but I don't buy equating entropy as complex concept with something as fundamental as time. They are incompatible. I love this defintion of entropy: Measure of amount of energy NOT available to do work. Measure of something nonexistent. lovely. But what is definition of energy? Capacity of doing work. Now, entropy is even more cute: Measure of amount of capacity of doing work NOT available to do work... And now let's increase _that_..
You are using coordinates as time, ignoring completely that to even remotely differentiate two states, or exercise entropy, you need preexistence of time.
But we may be talking past each other. You use time in context of _measure_, I'm talking about time as fundamental to existence. You see, term "existed" already includes concept of time. Concept of Energy, Work, Force, all they use concept of time for definition. Without existence, you can't measure anything. And you actually can't measure time, you can only measure relative amounts of changes.
Thats about something else. And imo starts from wrong place. Definition of term "exist" isn't even touched. If it were, it would be apparent that question of existence is meaningless. Concept is not.
I say that to exist is to interact. Entity that has no capacity to interact with anything, does not exist. Particle that will never interact with our universe, will never ever be detected. In principle.
what do you mean by change?
Technically, our consciousness of time is based on the fact that our straitial neurons keep track of the interval between every electrical charge that permeates through a specific part (of which the name escapes me) of the straitum. Otherwise, time is the increase of entropy.
I can't care less about our conciousness. I'm talking about fundamental logical principle. Look, two things that cannot be distinguished by any means in principle, are not two things, they are one and same thing. To distinguish two things, you need at least 1 whatever small measure of difference, be it position, size, time, energy or whatever. It requires, that to move from one thing to another needs change in that minimal amount of form. *Change*. When one form stays the same, for it there is no concept of time. Concept of time requires change. Amount of change is relative and depends on immediate environment. Same is with flow of time. There is no such thing as universal time, not even in principle, let alone GR.
I don't see your point. You said a particle should interact with its future and past self, then you insist the past, future cannot exist. Of course, this creates a paradox. not only your seemingly contradictory statements, but if the particle meets its antiparticle, they'll collide and annihilate each other. So how then is the particle going to interact with itself, if it is no longer existent as mass?
What casualty rules do you speak of? [/B]
Not casualty, _causality_, cause and effect. You don't read carefully. I showed that particle can't interact with its future, and from that it follows that future can not exist. Past becomes into now, and now becomes into future. But they don't exist relative to each other in same sense as you and me exist relative to each other. Future and past relate to each other more in a way as box being moved from one place to another. It was there, now its here. Can this box here interact with itself being there? This makes no sense.
You can't timetravel just because there is nowhere to travel. Best timetravel you can have is sleep. You stop interacting and let universe change more than you do, and you feel travel to future. But if you interact and change more than universe does, you don't travel into past. There is no way back. The only way would be to stop whole universe and force it turn back. But then you'll only get where you've already been, with no capacity to even know that turnback occured..
