After reading all the comments here, and also Harry Maryles's post on the topic, it seems to me that the best way of approaching the Cosmological argument isn't really as a straight up fomral argument and then picking holes in it (like Rebecca does and how I did in the last post), but rather as an exploration of different possibilities, with pros and cons assigned to each. So, here is my second attempt to deal with this in a reasonable way.
Premise: The Rule of CausalityThe argument starts with a premise, that every "thing" must have a prior "cause". I am going to define "thing" very broadly, to mean any kind of "thing" that can have the attribute of existence applied to it. A tree is a thing, an idea is a thing, a universe is a thing. "Cause" will also be defined broadly, it does not neccessary have to mean a cause in time, but rather a dependant cause.
Now, before we even get to the rest of the argument we have to stop and ask, how do we know this premise? Is it even true? And isn't the premise already assuming way too much? Very possibly. So lets see what the argument is and then we can get back to these questions.
Argument: The Universe Must Have A CauseSince every thing must have a cause (from the premise), and the universe is a "thing" (from the above definition of "thing"), THEN the universe must have a cause too.
Now this argument obviously only works if 2 things are true:
1. The premise is true
2. The universe is a "thing" (or at least the same kind of thing that the premise was talking about).
So the question at this point is, are these two points true?
We can already sense a flaw in this argument, because the rule of causality, which seems pefrectly intuitive to us, is based on our experience WITHIN the universe. However the universe itself, taken as an object, is slightly different. This is beyond debate - everyone agrees that inside the universe is different from outside the universe. Let's look at the differences:
Inside the Universe:
Time, Space and the Laws of Physics apply. Everything (that we know of) is 'Physical".
Outside the Universe:
There is no Time, Space or Laws of Physics (at least that we know of).
Now, it is entirely possible that the Laws of Physics (at least in some form) do apply outside of the universe, and possibly there are some some Multiverse theories that assume that. But then again, it is entirely possible that they do not. We have no way of knowing. So can we infer from inside to outside the universe? Can we say that the law of causality, a law that we have intuited based on our experiences within the universe, applies to outside the universe? It would seem that we really should not infer that from a strictly logical standpoint.
HOWEVER, I am prepared to concede this point at least for the moment, since it is a natural human intuition that every "thing" really should have some cause, unless you can think of a very good reason why it doesn't have to. And since there's no immediately apparent reason why the universe shouldn't have to have a cause, let's agree with the argument (at least for the moment) that the universe ideally should have a cause.
Now we get to the meat of the argument. To recap, we have posited a rule that every "thing" should ideally have a cause. We have argued that this rule makes intuitive sense, and that ideally the universe should have a cause too. This being the case, the obvious question is, what is the cause of the universe?
What is the cause of the universe?There are multiple options to answer the question. Let's lay out the options first, and then see which options strikes us as most reasonable.
Option 1: The universe always existed, it was uncaused.
Option 2: The universe caused itself.
Option 3: An infinite chain of causes is behind everything.
Option 4: A uncaused first cause caused the universe.
Option 5: The rule of causality does not apply to the universe
Option 1: The universe always existed, it was uncaused.
This option was probably the standard atheistic option until the Big Bang theory gained prominence. People just assumed that the universe must have been around forever (much like God). In fact, some Monotheistic philosophies assumed this too, and it is not entirely clear whether the Rambam would have insisted on disagreeing with this. There are some views that the ancient Israelites (and possibly people until the Rambam's time) held that the universe was infinite, and that God co-existed beside it, or even that God took pre-existing matter (Tohu VoVohu) and then formed it into the universe. But either way, since the advent of the Big Bang theory, this seems a less likely option, since we know our current universe began at a point in time, and therefore positing that the universe is in fact eternal no longer seems viable.
Now, we could get around the Big Bang issue by positing some kind of Multiverse theory. The details are not important, but we could say that the real Universe is actually a (possibly infinite) collection of sub-universes, of which our universe is but one sub-universe. The real universe has always existed, and hence is uncaused. The Big Bang (or whatever caused the Big Bang) is just a feature of the real, and eternal universe. With that kind of theory (and it is just a theory), this option could be back on the table. However once you posit the Multiverse, you are basically positing Option 4: An uncaused first cause - i.e. the multiverse becomes the uncaused first cause.
Option 2: The universe caused itselfMost people reject this option for being logically impossible. How can something not existent cause itself to exist? It seems to be impossible. Of course we canot prove it's impossible, and furthermore the fact that we cannot comprehend it does not neccessarily make it so. For example, we can't comprehend God either, but we don't say God is impossible. However for the sake of logical argumentation, this options seems very difficult.
Option 3: An Infinite Chain of Causes is behind everything.
Most people reject this option too. Although people tend to have no problem with the concept of infinity in principle (for example an infinite God), an infinite chain of causes does bother people. Possibly because of the heuristic principle known as Occams Razor, people don't like to have extra steps when they are not neccessary.
Option 4: A uncaused first cause caused the universe.
This is the option that the argument wants you to pick. Since the rule of causality states that everything must have a cause, and since the universe seems like it is a "thing" and should have a cause too, therefore the universe must (really should) have a cause. We don't want to say the universe always existed because of the Big Bang theory, and it seems illogical to say that it caused itself, and we don't like infinite chains of causes either for some reason, so the best option is to say that there must be some kind of thing (external to the universe) which breaks the Causual Rule and in fact does not need a cause itself.
Now this argument can be attacked from many different directions, including the premise of the law of causality (it's just not true), or that we cannot infer from inside the universe to the outside, or alternatively that the rule of causality is in fact good, and therefore the first cause MUST have a cause too, there can be no exceptions.
However, I think it's fair to assume that:
- the law of causality seems reasonable
- ideally the universe should have a cause (and I say this primarily because of the big bang)
- if we have to, I could make an exception to the law of causality (but the exception shouldn't be the known universe since that would seem strange)
So, I'm not going to argue on any of the above points. They all seem reasonable enough. So the question really boils down to this: Since it seems fair to assume that the universe ideally should have a cause, what kind of cause should/could that be?
At this point Harry Maryles makes the typical mistake of immediately jumping into a discussion of "spiritual" vs "physical". But this is clearly nonsense. How on earth could we possibly know that the ultimate existence is comprised of two states or planes - physical and spiritual? There is no way to know that. The most you can infer from this argument (if you even accept that the argument has any merit) is that something external to our known universe caused our universe to be. What is that something? Theoretically, it could be the Multiverse (or as I like to say, "Quantum Soup", mostly because I like soup).
As far as I can tell, the cosmological argument (taken by itself) IN NO WAY whatsoever leans towards a "Spiritual" first cause more than any other type of first cause. The only thing we can say about the first cause is that it is a first cause, and that the first cause is not the universe itself, but it could be a multiverse, quantum soup,
or any one of an infinite number of other incomprehensible possibilities. And Harry, a non Rose by another name (for example a car) is not a Rose.
As many people have noted, the cosmological argument does not in fact do very much by itself (and that's if it even works in the first place, which is highly questionable). You need other arguments to tell you anything at all useful about God. So I guess in conclusion, I think the cosmological argument seems somewhat reasonable, but is ultimately completely useless for our purpose.
VerdictAchieves nothing.