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Quinn's avatar

I just discovered your writing and have found your last couple articles to be quite interesting, even if much of it goes a bit over my head given that a lot of this is territory I’m just not very familiar with (even if I do find it compelling). Anyway, your discussion of fine-tuning caught my attention.

I realize this is a bit tangential to what you’re writing about since you’re discussing fine-tuning in the context of the fine-tuning argument for God’s existence, but I’m curious if you’ve heard about cosmological natural selection and the arguments it makes about why fine-tuning exists.

It’s a hypothesis put forward by physicist Lee Smolin which suggests that on the other side of black holes are big bangs, which is how we get new universes.

From there, Smolin suggests that black holes create conditions that can alter fundamental physical constants, and that these alterations are “heritable”, meaning that the “baby” universes created by these black holes would create their own black holes with fundamental physical constants that retained the alterations from their “parent” black holes.

Black holes with fundamental physical constants more conducive to creating more black holes (thus birthing more universes) would then be more reproductively successful, leading to cosmological natural selection and the fine-tuning of fundamental physical constants that lead to conditions conducive to star formation, and all the conditions that make life possible (at least, without those conditions created by this fine-tuning process, life would be impossible).

I was introduced to this hypothesis by Julian Gough’s Substack The Egg and the Rock (which is entirely dedicated to promoting this hypothesis) and I found it quite persuasive, which led me to read Lee Smolin’s book The Life of the Cosmos ( I’m still working my way through it) in which he laid out this hypothesis.

Of course, like you I’m not familiar enough with physics to be well-equipped to judge the soundness of the physics behind this hypothesis, but for what it’s worth, Lee Smolin is a very influential and well-respected physicist and Julian Gough makes what I find to be a convincing case that this hypothesis has failed to gain much traction for reasons that have nothing to do with any scientific shortcomings on Smolin’s part.

I apologize for how long-winded that was, but perhaps you’ll find it worth looking into. I think more people should be exposed to this hypothesis, and I wonder if you would find Smolin’s arguments particularly engaging, if not convincing, given how he bridges physics and philosophy (he’s also a member of the graduate faculty of the philosophy department at the University of Toronto).

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Alex Cb's avatar

Fine-tuning has always been one of the weaker arguments for theism, in my experience. It just betrays a lack of understanding of what it means when our models don't match observations or how scientific theories correspond to reality. If I have a model that predicts the number of jelly beans in a jar, and it's based on a successful tradition of other models that help me guess the quantity of other small, round objects in a food containers. Now it turns out my model is over by a factor of 20. Do I conclude that a supernatural entity set up the universe such that every time I went to measure the number of jelly beans in a jar, it was way off from my model? No, it just means my model is wrong and I don't know why. The fine-tuning argument only seems plausible if you think it's more probable that our predictions about the behavior and motivations of an omnipotent being are accurate than our understanding of how certain locally observed physical constants ended up are inaccurate.

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