Originally posted by vistesd
Gravity (more generally, the idea of gravitational forces) is not merely a description of what happens ("things go up, then they come down" but the first step in the search for why; i.e. the search for cause.
Perhaps I should have been clearer: I meant to distinguish physical explanation from metaphysical explanation.
And, if the universe (t cosmological argument. So I will take some time to read up on the refutations...
I'm going to pull together points from your previous two posts.
v:
it seems to me you are making a variation of the cosmological argument.
I am using
part of a cosmological argument. I'm not sure which, but I think it is a variation of the Kalam Cosmological Argument.
v:
Causality applies within the universe—an aspect of its coherent structure.
v:
The empirical argument, for one, is that we suppose cause because we observe cause and effect, and generalize inductively from our observations within the universe itself.
In order to generalize inductively, we must have a reasonable basis for believing that causality is
universal within the universe; i.e. every effect has a cause. However, you are also saying that the universe as a whole does not have a cause, despite the fact that it is identifiable as an effect (because of its contingency). If the system (i.e. the universe) as a whole does not possess a particular property (i.e. causality), how do you have an adequate basis for judging that the very same property is
universal to every part of the system?
v:
By your argument, any coherent feature of a system--indeed the system's coherency itself--needs a causal explanation from outside that system
That is
not my argument at all. I am not arguing that the coherence of the universe needs
a priori explanation. I am saying that,
given the "brute fact" of the incoherence as the universe as a whole, there is no reason to suppose the universality of coherence
within the universe.
v:
And how does the proposal of a supernatural being “transcendent to” the universe resolve the question without the assumption that such a being is itself causa sui
? Why does that assumption not carry a greater burden of proof than the one that the universe itself is causa sui
?
v:
By your argument, any coherent feature of a system--indeed the system's coherency itself--needs a causal explanation from outside that system; except that you do not apply that to God. It is no less logical to stop the regression at the "universe as a whole" than it is to posit a further supernatural being, and then stop by fiat there.
First of all, I must stress that nothing I've written so far necessitates that the proximate supernatural cause to the universe must be God. It could be a necessary being (which we may call God); it could be another contingent being (or a series of beings) that is itself caused by a necessary being (as the neo-Platonists assumed with their theory of "emanations"😉; or it could be just an infinite series of contingent supernatural beings. I'm not proferring a proof of God; I'm trying to demonstrate the weaker claim that, since the universe is not
causa sui, it must have a 'supernatural' cause "beyond" it.
Now, let's ask the question of what it means for something to be
causa sui (a term I'm not fond of, btw). A detour into mathematics might clear things a bit. Given a random quadrilateral, we don't know what the individual angles of its corners are (we know the sum of these angles - but not the angles themselves). Now, suppose you are given a random rectangle. Why is it that all its angles are right angles? It follows,
of logical necessity from the definition of a rectangle (e.g. a parallelogram with one right angle). This idea of logical necessity is they key to
causa sui.
For a thing to be
causa sui, that it is must be a sufficient explanation of why it is what it is. Put another way, were it any other way, there would ensue a logical contradiction. Can a contingent thing (such as the universe) be
causa sui? Contingency means that it could have been otherwise with no logical contradictions. When a contingent thing exists, its mere fact of existence does not tell us why it exists as it is (e.g. why do we have this particular universe instead of any other coherent alternates?).
A necessary being, on the other hand, could not possibly be any other way. That it is is a sufficient explanation of what it is. A necessary being, and only a necessary being, can be
causa sui.
That is why the person claiming that the universe is
causa sui has the greater burden of proof - he has to demonstrate that it is a necessary being and that no other universe but the one we live in is coherent; i.e. entails no logical contradictions.
v:
there is no logical necessity for a supernatural being. One could just as well say that the cosmos has certain natural properties that are not accessible by human reason or empiricism that determine its coherence (that would not be logically different from assuming a supernatural being--you are still just positing a point beyond which we cannot reason, and end by fiat the causal regression)
As I wrote above, I am not saying the causal regression has to end -- but if it ends, it can only end at a necessary being. And the universe is clearly not such a being - there is no reason I can think of why (say) the value of G (the universal gravitational constant) should not be anything but it is. The person who claims that certain "mystical" properties belong to the universe which determines its coherence is either ignoring the clear evidence of our senses and therefore has the burden of proof to demonstrate why such properties must exist; or is making exactly the same argument as the supernaturalist (and therefore posits the existence of the supernatural - even if he gives it another name) but refuses to admit it.