Les said:
Tournesol said:
It remains the case that time-as-a-dimension is needed to explain change, particularly to avoid the problem of contradictory states.
If you are still referring to McTaggart’s analysis,
I am referring to the argument that the statements
a) Edward VII is alive
and
b) Edward VII is dead
are contradictory , whereas
c) Edward VII was alive in 1900
and
d) Edward VII is dead today,
the point being that the addition of a time-index, which distinguishes c) and d), is essentially
the intorduction of time-as-a-dimension (above an beyond mere change).
I see it as merely a language trick to create an apparent logical conundrum where there isn’t any. What was his justification for assuming all states must exist simultaneously in time in the first place?
You tell me: that is the assumption you end up with if you do not admit time-as-an-index. If you hold that change occurs,
but do not hold that there are different "times" (analogous to places) for different states (such as being alive and being
dead) to occur in, then they must occur "on top of each other" -- thereby incurring contradiction, as in a) and b).
As critics have pointed out, all you have to do is say the past state was, the present state is, and the future state will be, and then there are no contradictory states.
That just *is* the indexing strategy, expressed in a naive form. It is for you to explain how the
past differs from the present, etc, without constituting some sort of series -- ie a dimension.
Quote:
Originally Posted by Tournesol
Moving time inside our heads does nothing to show how change can occur without contradiction. It also makes everything else worse, since you then go down the road of supposing that people are exempt from or unique within the universe.
What contradiction can you describe that can be empirically confirmed?
The empirical evidence is the evidence for change; the contradiction comes when you don't allow
that there are different times -- time-as-a-dimesion -- for otherwise contradictory descriptions
of change to be indexed against.
No one is saying people are exempt from anything. Their physical bodies are doing exactly what the rest of the universe is doing: changing.
And to make sense of change we need time-as-a-dimension.
In my last post below I will try another approach to explain why there is no actual or implied contradiction.
Originally Posted by Tournesol
Hmmm. can we 'find' dimensions of space ? Do we see them ? Or do we see gaps and shapes, and posit dimensions in order to explain them ?
Yes we can see space, but the dimensions are actually matter, not space
What a puzzling comment. Do you mean that the apparently empty gaps between objects are filled with matter ? Do you mean empty space has no dimensional qualities ? Do you mean space is relational, not absolute (ie, cannot exist in the absence of matter) ?
Originally Posted by Tournesol
Are you seriously asserting that what we can directly observe is *all* that is there -- that we cannot infer anything else, even if it is needed to explain what we can see ? So, when we see objects falling, we have to stop there and regard it as a brute fact; we can't appeal to an unseen force of gravity as explaining it.
Well, I am saying you have to be able to either observe something directly, or an effect of something. We can see at least traces of atoms, and we can see the effects of fields. Time, on the other hand, has no traces and no observable effects.
The "effect" of time is that change can occur without contradiction.
We *see* change. We are forced to posit a dimension in order to make sense of what we see. Where is the appeal to intuition in that ?
This is what I meant in my earlier post about the Platonic view of time, that like space, we need a dimension for change to happen within. All we need is space and something changing.
You have not explained how you avoid contradiction without positing a dimension. Saying "it is all we need" does not address the problem.
I can't see how solipsism applies here. If you say that because I claim time is a psychological sense, then projection is the proper term for what I'm describing. And if you say that because I insist on the epistemology of observation of traces/effects, that is the basis of empiricism, and so you'd have to also call science solipsism.
The point is the difference between a "shallow" empricism , that amounts to solipsism, and a "deep" one that posits not-directly-observable entities in order to make sense of what can be seen.
Refusing to analyse the concept of change is not a response.
But I have analyzed it. You are convinced time is a dimension, and I suspect you aren’t going to accept any other view of time. I too am convinced of my view, although I believe I would change my mind if someone could demonstrate a time dimension to me. To date, I have never experienced a time dimension in any way, shape or form except in the mind of myself and others.
That would be shallow empiricism.
So let me try another way of explaining time that jives with something I have experienced.
Assume there is only one true absolute; let’s call it existence. I will define existence as “neutral” (i.e., not matter and not mind), assume that existence cannot not exist, and that there cannot be a beginning or end of existence; so neither time nor boundaries are properties of “pure” existence (i.e., existence is eternal and infinite).
If existence is the most basic state, then all that we see is some form and/or condition of existence. In other words, there is one pure existence, but a great many forms and conditions of existence. Although we can see how forms or conditions may be relative to other forms or conditions, ultimately every form and condition is relative to the absoluteness of pure existence.
For physical forms of existence, time is a condition. A physical form has a beginning where it arises from pure existence, and then so many changes before it loses its form and becomes pure existence again.
Physical forms also have the condition of dimensions. A dimension is extension along a unique plane, and of course within the infinite, eternal realm of pure existence. In this model, space doesn’t have dimensions, physical objects do. Space is a finite condition of existence (itself infinite) that allows extension.
Well space does have dimension, whether it says so in your model or not. The motion of a body in space can be described using sets of
not more than 3 numbers. Hence, space is 3 dimensional.
Is time a dimension? A physical form of existence is extended in at least three planes of D x W x H. A physical form also can be described metaphorically as extended in terms of duration, but it isn’t at all like the original meaning of a dimension. A virtual particle has very little “extension” compared to proton because it pops in and out of existence faster. Time becomes associated with dimensions in relativity where, say, acceleration affects physical extension as well as duration. But all that really happens is the form’s rate of change, change that will eventually end in pure existence, is slower than a non-accelerating frame of reference.
OK. So when *you* say dimension , you mean *spatial* dimension, and when you say *spatial* dimension you mean "extension of a physical body"
just as Descartes did. Well, of course time-as-a-dimension is only going to be *analogous* to a spatial dimension. But that is an
artifical problem. Some water has passed under the bridge since Descarte's day; we now have the concept of a spatio-temporal
dimension available. Are you thinking inside a box ? Or is a True Scotsman argument -- "it isn't a dimension unless it's a
spatial dimension".
(And the Cartesian concept of a dimension still doesn't work; a point particle moving in space needs to be described
by 3-vevtors. The dimesnionality is there without the extension).
So time as a dimension is metaphorical. If we want to say time is a dimension, then we have to redefine dimension and come up with a new term for physical extension. Overall time is the condition of temporariness of physical forms relative to the absoluteness of pure existence. The march toward pure existence is entropic change, so 'time' is both how many entropic changes a physical form has left, and the rate of those changes.
time-as-a-dimension is what allows cnahge to occur without incurring contradiction.
Where's the time dimension except in our mind?
Not in our mind, and not in a spatial location. To insist that an answer has to fall into either of those
categories is to beg the question.
Consciousness is conditioned by entropic change just like we are conditioned by light, sound, taste, gravity . . . Constant, unrelenting entropic change is part of our conscious experience from the moment we are born, long before we are able to contemplate it intellectually. So we are quite unconsciously conditioned to accept temporariness as part, or a “dimension,” of the world in which we live. That is why I think time (as a dimension) is projected from the sense of our own limited duration as we watch ourselves and everything else change right out of sight.
I have already given you the real reason for time-as-a-dimension. Since you have in no way refuted it, there is no
need for a psychological explanation to account for belief in time.