walls expand and contract when I take certain drugs
I think the notion of expanding and contracting is the only way to encapsulate a universe with the most basic start and finish (smallest point possible)
I think it just happens that many organisms grow from something tiny until they are mature, and then shrivel away.
however I think it is only loosely analogous. I dont think the theories on expansion and contraction of the universe came from noticing old people deteriorate into nothingness.
heres what Ive been thinking about the destiny of the universe
IT makes plenty of sense that the universe 'started' at some point, but not necessarily ended. I reason this from the notion of scale, which has its ends at 0 and infinity (instead of -infinity and positive infinity, which is usually how time is portrayed)
the universe may have started.. but it was not like it just 'started'...
for the whole universe, including all points in space, all points in time, and all points in any other dimensions there are, may have come into existance at the same time
or always have existed
but there still might be a notion of the 'start' of the universe. the universe, however, is likely to have no tangible value at time 0.
imagine that the universe has infinite density, infinite almost all qualities of compression at time 0. this is impossible, really, to have this infinite scale.
then imagine that the universe has 0 density by time infinity
again, an impossible state to actually attain, given that the universe HAS contents (thus could never have 0 density really)
but as theoretical constructs, time 0 and time infinity still appear as notions on our graph.. and can be subbed into our equasions.
they just dont exist as discrete states of the universe
similarly, the universe may contract again
which is how i used to see it, given that I considered time to extend infinitely in all directions.
i still think about the universe as if it lasted forever
but when strictly considering the implications of denying a 'first' time in the universe, I am drawn away from the notion of an expanding and contracting universe (which seemed perfectly reasonable and still does - for if the universe trully did compress eventually, it would probably just expand again and go on for eternity expanding and contracting, perhaps the same way each time, or perhaps a different way each time, depending on the final state of the previous universe, which might be different each time round, much like the decimals in pi).
now, the notion of a time 0 and time infinity does not actually posit a 'start time' or 'first moment'. this is the same idea as making a smaller and smaller fraction.
time 1 is preceded by time .5
preceded by time .1, which is by .001, which is by .000000001,
and every single 'point' in time is preceded by a point in time, so there are no points in time that are the first point in time, except point 0, which does not have a tangible value.
what this actually means for existence is hard to say..
if the universe had a 'value' of 0, would it exist? 0 exists when we talk about it and use it in our calculations. but does it ever actually exist as a value? in other words, can it have a quantity?
I think it represents a mental 'grasp' of the need for a quantity, for an unfilled space of quantity, the lack of it. This has relevant function in the way that humans abstract information, frame their thoughts in consciousness, and effectively create their comprensible reality. But it represents something that does not actually exist.
We need to, I think, embrace the fact that we have our own inner reality (which we all relate to) where things EXIST in our world, but which cannot be positively identified anywhere in the universe, and know that whatever the answer to our questions is, it will have to be processed by the same system that facilitates the notion of non existant entitites.
it seems like a paradox that in order to understand the pure existance of something, we have to accept the truth of concepts involving non-existant entities.
I guess one way of looking at it is that no matter how hard we try to remove ourselves from ourselves to purely grasp the 'objective universe', we can never actually remove ourselves from the equasion. thus we will perhaps never be able to contain the universe in ourselves WITHOUT taking into account factors of non-existance, which are manifested by our need to subtract ourselves from the total equasion.
^^perhaps a sort of neo-Romantic way of looking at it, but anyway back to the topic
yeah I am of the opinion now that The universe is most likely to keep expanding.
as a last point to think about, perhaps of interest to someone out there,
the idea that the universe will eventually collapse:
well It makes sense considering that mass may eventually be brought back together
but what about light?
radiation?
how does light interact witht eh 'edge' of the universe?
if the universe really continues forver, does the spread of mass?
What we have to remember is that the 'expansion of the universe' is not like a floating pile of pebbles escaping away from eachother.
it is more like a matrix of pebbles that are stationary, but as the speed of light 'slows down', mass increases, and effectively, the 'distance' between the pebbles increases insofar as the amount of time it would take an intertial point to travel the distance given a certain momentum/speed/etc
the distance is increasing and the total 'units', defined in any one moment, will be able to fit moreso across the universe at a later point in time (even if it is an infinite value)
however, as the universe is expanding, matter is collapsing into its equilibrium.
THus planets themselves do not increase in size with the universe. as the distance between the 'matter' comprising a planet increases, it has a lower density and thus can take more weight, and thus the planet shrinks back down to its stable state. there is, after all this, a greater amount of space around the planet. that is to say that it would take light longer
and one more bonus nifty notion on the topic of time and the universe
if you go at the speed of light, then effectively time stops flowing
photons never age
this seems so profoundly significant to me
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