@Cyracuz,
Cyracuz wrote:
Quote:i suppose that i am challenging the idea that time is simply an aspect of space
Space. The space we perceive has 3 dimensions. If you move along one of the dimensions, lets say straight up, you are only moving in that one dimension. In the two others you have a fixed position.
If the space we perceived was 2 dimensional, the same movement in the 3rd dimension would not be perceived by us. Instead it would be perceived as change happening in the first and second dimensions; inside the space we can perceive.
i'm not sure that this is accurate. Are the 3 dimensions you mention in your thought experiment a product of our perception, or of space, or as tools of perception in relation to space? Whichever of those alternatives you choose, aren't those three dimensions, or our perception of them anyway, relative to one another? If one of us were to levitate, our movement might only take place in one dimension, but wouldn't our perception of all 3 change? That's what i would assume based on your saying that an invisible shift in dimension 2 would result in an apparent (but inexplicable?) alteration of our perceptions in 1 and 3.
i think that our relationship to space, the fields divided by the dimensional axis, is more complicated than our comprehension of that axis.
Cyracuz wrote:
Duration, or time, can perhaps be thought of as movement in the 4th dimension. It is a direction of movement, and like in the example above, we are not perceptually aware of this movement, because it is possible to have a fixed position in all 3 spatial dimensions and still have movement in the 4th.
Not to be snotty, but how is our supposed "blindness" to time in any way "like" our relationship to D1, 2, or 3, as previously defined. i grasp the concept of time-as-duration (very Cartesian of you, by the way), and i appreciate the Zen koan-like evocation of movement without direction, but endurance is a state relative to a being's surroundings.
Cyracuz wrote:
If our perception was such that it could perceive 4 dimensional movement directly, we would perceive the sun over the sky as a long glowing arc from horizon to horizon. From a 3 dimensional perspective reality would look like a movie where each frame was put on top of the previous one without it first being removed until all the frames showed at once. But in an awareness with more dimensions, there would also be a direction in the space we were able to perceive for all this fourth dimensional movement to happen.
So in a way, time is space. It is just the direction of space we cannot see.
What you seem to be implying here is that perception of D4 would require us to be blind to the other 3 dimensions you've discussed. If that were the case, wouldn't that also imply that time and space are not related?
The problem with all of the above is, as i see it, that the 4th dimension isn't invisible -- oh, if time manifested only as duration then maybe, but duration isn't a sufficient definition of time. There are all sorts of easily observable aspects of time or change -- multiple "directions in space" that move in a way that we
can see. Why stop at time as a 4th dimension? Why not make it 4, 5, 6, 7, and 8?
i know that my posts in this thread might seem contradictory or ambiguous. i'm kind of thrusting and parrying with fresco as to "time's" relationship to the observer, because while i think that processes are certainly observer accessible, i do not think that they are all observer dependent. And i'm disagreeing with Fil's radio metaphor, because i know that he is starting to get into his ontological argument that everything exists simultaneously, which i find untenable. And his suggestion that time is reducible to space not only seems to me to mis-define "time", but to misjudge space as well. And now, i'm getting into it with you because i find this model that you have suggested unworkable based on observation and the tools available for it.
"Observation and tools"...i suppose that is part of what i am trying to get at -- "the dimensions" whether you want to count up to 3 or 4, etc. are tools or mental adaptations with which to make our relationship with our environment manageable. But there is no reason to assume that they are valuable as representations of that environment.