The universe is all that is. The concept of multiple parallel universes (
multiverses) is merely a theoretical construct without any counterpart in reality as experienced by human beings (by definition).
Starting from simple observations, without theorizing or modeling for now, the universe is a very vast expanse of space, with stars and galaxies and other forms of matter as far as the aided eye can see. The universe also manifests movement of matter (heat, energy, momentum), and the effects of various force fields (e.g. electromagnetic and gravitational). And all this implicitly assumes Time, the so-called fourth dimension in which events happen, and in which causality is seen as self-evident and fundamental.
Time and Causality imply a history, and a future. The topic that I want to briefly, and philosophically, address in this article is the history of the universe itself, rather than of any particular object in the universe. That is, to try to understand whether the universe is infinite and eternal, or finite and having a beginning, or any other combination.
The most popular model of the universe at present is the
Big Bang Model, which has the following fundamental tenets:
- The universe, with its properties, space and time and the physical laws, had a beginning, known as the singularity.
- It is finite, and has been “expanding” since that singular beginning.
My aim in this article is to philosophically, and in a common sense way, analyze the implications of these tenets.
Let us consider the first proposition, that the universe had a beginning. The obvious questions are: How come it began? What caused its birth? Where was the cause located if not in the universe, etc.
Now, let us assume the universe had a causative factor. In which case the factor was existent, and since all existence is collectively known as the “universe”, to say that the factor “caused” the universe (i.e., that the factor was distinct from the universe) is to confuse the meaning of the word “universe”, by understating its overarching reach. The factor, by definition of the word “universe” (all that is), is within the universe. This is the first problem,
P1.
The second problem,
P2, is with the very notion of “beginning”. The Big Bang model ventures into the fantastical realm when it claims that Time itself had a beginning at the event of the Big Bang. Now this presents a quandary similar to that in
P1. The notion of “beginning” presupposes Time. To say that “Time” had a beginning, is to consider “Time” as an event, as for example, that the horse race had a beginning. Sensibly speaking, Time is not itself an event; it is the very dimension (the fourth dimension in
Minkowski Space) in which events happen. You cannot sensibly plot "Time" itself as an event on a space-time diagram.
The above two are formidable problems with the Big Bang model. Some scientists and philosophers
do seem to be grappling, quite ineffectually, with these.
The third problem,
P3, is with the notion of cause itself. If time and “physical laws” (whatever they may be) were non-existent, then this preempts any question of causation of the universe. Then we might as well throw up our hands and leave, because by definition no explanation is possible for an event when causality, time, laws all were absent.
The next problem,
P4, is with the notion of space itself expanding. This suffers from a confusion of language as well. Space is where expansion happens. How can space itself expand? What is it expanding into, in that case? How can matter receding from some other forms of matter (cf. the red shift) imply that the space in which everything is “expanding” (whatever that means)? All one can imply is that, assuming the red shift and other measurements are correctly indicative of matter’s movement, the distribution of matter seems to be getting sparser in the pervasive volume of space, in other words, that there is
“intrinsic expansion”. To make the leap that this “intrinsic expansion” is “extrinsic” is completely bogus and theoretically unsound. I was happy to note that some scientists, at least, agree with me about this problem.
The prevailing view is that of Chodorowski: "unlike the expansion of the cosmic substratum, the expansion of space is unobservable". (Wikipedia article on Metric Expansion of Space)
I would go further and say that not only is this unobservable in practice, it is in principle unobservable and is philosophically and logically contradictory.
The last problem,
P5, is not really a problem, but a rather conceptual meditation on the very definition of eternity and infinity, in time and space respectively. In my understanding, infinity can never be observed in the physical realm, it can only be thought about. What one can experience is always finite and limited. Even in thought, the notion of infinity comes primarily from mathematics (for example
the aleph-0 and aleph-1 infinities). Eternity, likewise, is a conception (or a deduction) which is in principle not an experiential possibility.
If the Big Bang model presumes a beginning to Time, and a limit to Space (both contradictory concepts to begin with, but let’s play along for a while), it can still be argued that the universe is eternal and infinite. This is because now the notion of eternity can only mean: earlier than any time, i.e. as long as Time has been (sic). And, similarly, the notion of infinity in space can only mean: further than any distance, i.e., as far as space exists (sic). Considering especially the notion of
“curved space”, it can be contemplated that infinite space is consistent with a “bounded universe” because now the notion of distance itself has been subverted. Or rather, twisted.