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Do you think the seeming improbability of the origin of life is evidence for theism?
I don’t mean with respect to so-called cosmic "fine tuning." I refer to the fact that even with our potentially finely tuned cosmos it’s still incredibly unlikely that life would emerge. I took an earth science course in college, and our prof said that Abiogenesis is still the main theory: namely, non living matter gave rise to living matter through a combination of exquisitely improbable events. A bunch of chemicals mixed with other chemicals and were struck by lightning or something, creating the first self-replicating molecule. If you protest “but that’s about as likely as a fighter jet being assembled out of chance collisions,” he says “given the law of large numbers, given enough opportunities a fantastically unlikely event will eventually happen. And the observable universe is just so so vast.
I just realized this might imply that, actually, there probably is a fighter jet somewhere in the universe that arose from chance collisions of matter, or at least that this result wasn't any less likely than life arising from nonliving matter. If you say no to the fighter jet thing, but yes to a self-replicating molecular machine finding a stable enough environment in which to proliferate for millions of years, then presumably you would need to explain the asymmetry in your expectations.
Maybe the chance fighter jet is just… even more unlikely than that? Based on what? The fact that there are many more optimally arranged parts involved in a fighter jet? Maybe, but if that’s actually true, why have we been able to create fighter jets, but not engineer a self-replicating molecular organism from inorganic matter?
About cosmic "fine tuning":
If you buy any of the typical objections to cosmological fine tuning, there is a concern about whether your view "proves too much" by failing to admit of scenarios that would intuitively serve as compelling evidence for Christianity. For instance, in a universe in which the words "made-by-Jesus-Christ" were written into every square inch of matter as a direct result of the way the initial parameters of the universe were ordered, you would have to conclude that we had absolutely zero evidence in favor of Christianity.
Typical Objection to Fine-Tuning #1: "But we don't know how to weight the prior probabilities of alternative universes. At best, we can only assume that the life-permitting parameters are unlikely given all of the non-life-permitting alternatives."
This is equally true of the made-by-Jesus world, but do you really want to say that that world would offer no evidence in favor of Christianity? Isn't that just an unreasonably high degree of skepticism?
Typical Objection to Fine-Tuning #2: "According to the anthropic principle, we wouldn't be in a position to ask about how we appeared in a life-permitting universe if it hadn't been life-permitting to begin with, so fine-tuning requires no explanation/is explained by the fact that it had to happen from our POV."
It's not always clear what is being proposed by the objector making the anthropic principle argument, but on one interpretation the objection is saying something like "any phenomenon which presupposes an explainer requires no explanation/is automatically explained by the fact that it allows for an explainer to exist and wonder about it."
So, for instance, we needn't explain the complexity of life via evolution because had it not occurred, we wouldn't be in a position to wonder about it. Or a falling man who prays for a parachute and is saved when one spontaneously materializes out of thin air needn't explain this miracle because, had it not occurred, he wouldn't be alive to consider candidate explanations.
But notice that the anthropic principle objection can also be posed to the "made-by-Jesus" world, and even still, the "made-by-Jesus" world would be compelling evidence in favor of Christianity.
Typical Objection to Fine-Tuning #3: God could have any number of purposes. Why assume that he wants life to evolve?
This equally applies to the "Made-by-Jesus" world. I can imagine any number of deities who don't want to create a made-by-Jesus world. So in the "made-by-Jesus" world would we have absolutely zero indication that Christianity is true?
Typical Objection to Fine-Tuning #4: Maybe the fine-tuning is just necessary and had to be that way. Since God is supposed to be a necessary being, is it any better to suppose that an explanation that proposes a necessary God + a contingent universe is better than simply a necessary universe all on its own?
This equally applies to the "Made-by-Jesus" world. Maybe the initial parameters of the universe just had to be set up so that the words "made-by-Jesus-Christ" were written into every square inch of matter everywhere. So is the "made-by-Jesus" world not strong evidence for Christianity?
Typical Objection to Fine-Tuning #5: If the multi-verse hypothesis is true, then a finely tuned universe is due to chance. Given enough opportunities, a life permitting arrangement of the parameters will eventually come about, no matter how unlikely one is.
This equally applies to the "Made-by-Jesus" world. So is the "made-by-Jesus" world not strong evidence for Christianity?
Typical Objection to Fine-Tuning #6: There's no telling whether the other parameters of the universe would be life-permitting.
The typical response to this objection is to point out that the features of the universe on which the parameters depend are extremely broad, so that changes would result in a world where, say, all we would have is a distribution of matter in a pattern of random TV static, or each particle being separated from the other by so much space that complex structures could never form, or a giant undifferentiated lump of matter, etc.
But anyway, why couldn't the same objection be made to the "made-by-Jesus" world? For all we know, most arrangements of the parameters of the universe result in a "made-by-Jesus world." We haven't observed those universes, so who is really to say otherwise?
Typical Objection to Fine-Tuning #7: The fine-tuning argument is just an appeal to our ignorance, or a "god-of-the-gaps"-style inference.
Is this also true of saying that the truth of Christianity is a good explanation for the made-by-Jesus universe?
TL;DR: If you buy any of the typical objections to cosmological fine tuning, there is a concern about whether your view "proves too much" by failing to admit scenarios that would intuitively serve as compelling evidence for Christianity. For instance, in a universe in which the words "made-by-Jesus-Christ" were written into every square inch of matter as a direct result of the way the initial parameters of the universe were ordered, you would have to conclude that we had absolutely zero evidence in favor of Christianity.
Are we really arguing about abiogenesis using the fighter jet analogy in 2023? The Blind Watchmaker is almost as old as me.
The scale of Earth history is mind-boggling. Five hundred million years of chemical reactions in the primordial ocean is a whole lot of time to get the first self-replicating mechanism going. You could bomb human civilization back to the stone age, leaving it with just the knowledge of basic agriculture, let it build back to the thermonuclear bomb, bomb it again, and do this forty thousand times. Forty thousand distinct human civilizations, waging wars, building monuments, creating art, living and dying. If that sounds like not enough, bomb it to the dawn of writing. Then you can squeeze a hundred thousand civilizations into the time it took random chemical reactions to come up with the first replicating machine. That's a lot of time for the largest Petri dish on Earth to come up with something randomly. Or semi-randomly, since you only need a nucleic acid that makes other nucleic acids to try again and again until a nucleic acid that makes itself emerges from the soup and quickly takes over.
Those simple replicators then spent the next two and a half billion years as single-celled organisms of increasing complexity, evolving predation, organelles, photosynthesis, until finally getting to multicellularity. Then it's a billion more years of coming up with modern kingdoms of life, and then everything you know from popular fossils, all these mammoths, terror birds, dinosaurs, dimetrodons, gigantic butterflies, tree-like horsetails, terrifying sea scorpions, ammonites, belemnites and trilobites are all squeezed into the last five hundred million years or so.
I wasn’t arguing against evolution, which doesn’t address the origin of life. Evolutionary theory explains how life became diverse/descent with modification happened, but it’s not even an attempt to explain life’s origins. Abiogenesis is still the leading explanation.
Yes, abiogenesis is the leading explanation, and there's nothing wrong with it.
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