Immanuel Can wrote:wtf wrote:I've seen Craig's phrasing and it's always seemed a little off to me. What does "begin to exist" mean? For one thing it seems very binary.
It is. But some things are genuinely binary. As they say, "You can't be 'a little bit pregnant or a little bit dead.'"
A thing "exists" or it does not. If it "exists"
a little bit, then it "exists." If it does not, then it does not at all. That's simply definitional of what it means to say a thing "exists" at all. It's also basic logic, as first explained to us by Aristotle.
But Craig is saying that a thing "begins to exist" meaning that there is an exact moment on the boundary of existence/nonexistence. A topological boundary, cleanly delineated. That itself is a rather arbitrary assumption.
No, I would say not. And in fact, not just Aristotle but every logician afterwards thinks so. Without the distinctive meaning of the idea of "existence" no predications at all are possible.
One can argue over whether or not X or Y "exists." But if one imagines one can flex the very meaning of "exists," one gets into illogic right away, or else owes a greater explanation. For example, I might say "unicorns exist" (meaning, "exist in the human mythological catalogue") and "unicorns do not exist" (in the sense of material, factual existence), and have both being true at once. That's possible because of
amphiboly -- the double-meanings of some words.
But as soon as we both accept and stipulate that "exists" (for purposes of our conversation) means only
one of these definitions or the other, its opposite is ruled out 100%. Mythical unicorns exist or don't. Factual unicorns exist or don't. There's no "kind of existing" in either case.
That's binary, yes: it's also inescapable.
For the moment I will accept it. Now I understand "begins to exist" or "begins to happen" like this:
P1. In the universe of things that exist, there are two mutually exclusive classes: Those things that began to exist, and those that have always existed.
P2. Any thing that begins to exist must have a cause.
This is good.
Now we see that the "begins to ..." preface to "exist" actually entails an entirely separate premise. That things that exist may be so categorized. We might even call the things that have always existed, eternal; and the things that "began to exist," the temporal. I have the feeling that's Craig's intention.
Correct, I would say.
Be that as it may, I now see the Craigean logic. If you accept (wrongly) that P2 implies that there must be a first cause, then a thing that has always existed, ie that did not ever "begin to exist," need not be caused.
Right. Except he's not wrong.
That explains the logic of saying that everything has a cause yet God may be uncaused. Now I understand Craig's intent. It is not the case that everything has a cause. Only things that "begin to exist" must have a cause.
Right.
And if we (wrongly) conclude that there must be a first cause, then that first cause is necessarily a thing that did NOT "begin to exist"; it's a thing that ALWAYS existed.
Correct.
That is the meaning of the mysterious phrase, "begins to exist." The principle of Causality is not meant to apply to all things that exist, only those things that begin to exist. There are other things that have always existed, to which Causality does not apply.
Right.
I wonder what is the evidence for that
At least three things. First, the absolute certainty that an infinite regress of causes is impossible. Once we know that pretending things can start to happen without causes, we know that such a chain must begin somewhere.
Secondly, we do seem to know some things that appear to exist independent of the contingent, time-bound, empirical world. Numbers seem to be one of those things. "2" is still "2" at all times and places (no matter what symbol we use for it, whether 2 or the Roman number II, or .. or whatever).
Thirdly, we can observe empirically that the universe is not infinitely old. Entropy, even at an extremely slow rate...say only 1/1,000,000th of its' actual, measurable rate today...would mean that in an infinite universe, we would have attained heat death an infinite amount of time ago. Likewise, we can observe things like the Red Shift Effect that demonstrate our universe is linear and expanding, not cyclical or contracting. So the scientific observations we have square with a "caused" universe.
That'll do for now, I'm sure. I'm glad, though, that we've broken through to the key point. Thanks for your thoughts.