by jimwalton » Tue Oct 27, 2020 2:59 pm
Nothing can spontaneously generate out of nonexistence. Therefore something (or someone), whether matter, energy, or God, must have always existed for the cosmos to exist today. Everything we see around us had to have come from somewhere—something that made it come into existence. Things don’t just pop into existence all by themselves. Other things make them come into existence. My claim is that science gives us no evidence of anything that began to exist spontaneously of its own volition. We know of nothing that at any time began to exist from its own nature (How can something pop itself into existence when it doesn’t exist?). If it had a beginning, it had a cause outside of itself, whether technological, mechanical, or even biological. Something had to have already existed.
Scientists are on the hunt for "the beginning." They use mathematics to extrapolate back to "the beginning." Using the observable expanding universe (from the Big Bang) as factors in the equation, the theory holds that way back in time, before the Bang, there existed only an infinitesimally small point consisting of no matter and no dimensionality, where the laws of physics as we know them were not in operation. If that is the case, a supreme, supernatural divine being outside of what we know as nature is a logical candidate to have been the First Cause.
Ilm al-Kalam proposed that unless there was a beginning, there wouldn't be a present. Think of it this way: Suppose you go to the grocery store and, approaching the deli counter, you plan to take a ticket for your proper turn. But on the ticket-dispenser you see a sign that says, "Before taking this ticket, you must take a ticket from the machine on the right." You reach for that machine, but it also has a similar sign on it. The third machine has the same sign. And the fourth. This could go on forever (which is Kalam’s point), unless you finally get to a machine somewhere in the line that allows you to take a ticket. Unless there is a beginning, there can be no present.
Kalam’s case could also be stated mathematically. Instead of starting counting at 1, start at the first number after zero. Well, you can’t start at .9, because there’s .8, .7, etc. You can’t start at .1 because there’s .99, and there’s .999, and .9999. In other words, if we have to consider an infinite quantity of previous numbers, we can’t even begin to count.
Here is the way Kalam’s argument looks:
1. Everything that begins to exist has a cause.
2. The universe began to exist.
3. Therefore, the universe has a cause.
What he is arguing is that somewhere there must be a First Cause, something (or Someone) that was always there to kick the whole thing into gear, to cause everything else. God is a more reasonable possibility as the First Cause than any other explanation, including a scientific/natural one.
We are wrestling with what best explains the beginning. Since such realities cannot be observed with our senses or tested in a lab, and since the laws of physics and the forces of the universe were not operational before the Big Bang, theists claim that no explanation for the universe can be found from nature's own existence, since it didn’t yet exist. The mechanism that caused the universe was external to the universe, and it was obviously powerful, outside of nature, and before time (eternal). While alternatives for what that mechanism was are continually theorized and discussed, God is not an irrational choice among the options. For that matter, God is probably the most rational choice among the options, if you're not biased against God from the beginning (which is, of course, irrational all on its own).