Michael Behe's "Billiard Shot" model

Heh, that really does reveal some exceedingly sloppy thinking on the concept of what randomness is from Behe.

I do not know what you are trying to convey.

And presumably if God had not set up his pool shot, a natural origin of life, and the evolution of man-like organisms would be much more unlikely, but then God could simply have made the universe much bigger, leading to many more unpopulated planets and galaxies, but nevertheless guaranteeing that on some of them, man-like organisms would eventually evolve.

And we could of course imagine it going even further the other way, where God could have set up the pool-shot even better, leading to an even higher proportion of planets yielding biospheres, with sentient life evolving on them. And somewhere in that range of initial conditions that lead eventually to a planet with human-like organisms on it, we find ourselves. And this is the one, the one we should think God would have picked. If the frequency of sentient man-like organisms had been lower, we might have reason for doubt. But here it appears to be so high that, nah, musta been God that set it up.

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I think that it was completely contrived. The idea that a review or textbook chapter on the evolution of the immune system would necessarily include the word ā€œrandomā€ in its title or abstract is absurd.

So these are not your own views, and you were only reporting Denton’s? I misinterpreted ā€œCertainlyā€.

How can geological features be built into the universe?

Perhaps you don’t quite realize what ā€œmammalā€ means. Or perhaps I don’t understand what you mean by ā€œmanlikeā€. But biologically speaking, none of this makes sense. One might also ask why, if this is supposed to happen all over the universe, it only happened once on earth.

Yet more evidence that none of this is science.

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I’m sorry for the mixup; maybe if I had said, ā€œCertainly, for Denton ā€¦ā€ that would have helped. But I thought I was answering a question about Denton’s views, so I assumed Denton would be taken for granted.

You’re now slipping back into that way you used to have of talking to me. Can you drop the condescension and return to your more collegial tone? I know what a mammal is, and you ought to know that I know what a mammal is. And it’s obvious that if a primate is required, then, since primates are mammals, mammals are required. And I’m reporting Denton’s account. You could save yourself a lot of trouble by reading him firsthand instead of asking me to summarize for you. Why not get it straight rather than through a filter?

We don’t know that it happened only once and on the earth. It may have happened on many other planets too far away for us to ever communicate with.

I already said that I regarded ā€œdesigned naturalistic evolutionā€ as a broad concept, not as a scientific theory, and that it would need more work to turn it into a theory. Denton takes some baby steps toward turning it into a theory. If I were a scientist, I’d be trying to see if more could be done with it. It’s an interesting idea.

In the realm of satire, Jonathan Swift doesn’t have to fear any competition from you.

No condescension there…

He’s right though, since I’m not writing satire.

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Well, if you weren’t attempting satire of either Denton or of front-loaded models, the wit evidently intended by your final paragraph escapes me. Whatever point you were making was lost on me.

I’m gonna have to believe you I guess.

Does that mean he explicitly mentioned each of those things?

I’m not quite sure. ā€œMammalā€ is a clade, united by common descent, and diagnosed (though not defined; there’s a difference) by a number of characters, including mammary glands, a dentary-squamosal jaw joint, malleus and incus in the middle ear, almost but not quite always seven cervical vertebrae, etc. Now, is Denton really claiming that anything identical to this particular clade, with these particular characters, was inevitable from the beginning of the universe? I have my doubts. As for primates, you didn’t say that. You said ā€œprimate-likeā€, which has greater latitude than the unequivocal ā€œmammalā€.

This assumes that I could easily find the book; I’ll look, but no guarantees. Which of Denton’s books are we talking about again?

You have added that extra word ā€œandā€ that changes the meaning. I mean to ask why, on earth, there are not multiple manlike species, if it’s such a common thing to evolve. And I’m not referring to different hominids; I’m referring to independent origins of humanlike taxa on earth, as one should expect if it happens all over.

It isn’t even a scientific hypothesis, much less a theory.

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This idea of randomness is by far the biggest issue or complaint I hear from pastors and non-scientist Christians. I can’t even count the times I’ve heard evolution described as ā€œtime and chanceā€, ā€œblind purposeless chanceā€ , or ā€œrandom mutationsā€ in sermons. ā€œDescent with modificationā€ seems to maybe take a backseat to ā€œrandomā€ in terms of what concerns many Christians about evolution. I think that’s why ā€œGod-guided evolutionā€ resonates with many, and why GAE may make inroads in some unexpected places.

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Exactly; it’s also a central element of @Eddie’s sermons here.

That’s why ignoring existing heritable variation, which is obvious to any thinking person, is so polemically critical. Please explain this to @T_aquaticus.

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That makes sense, and to be fair I do think some scientists are partly to blame for this since I often come across sloppy or at least unclarified use of the term. It certainly isn’t less complicated by the fact that the word has multiple, some times mutually exclusive meanings.

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But even worse, there are well-meaning descriptions of evolution that ignore existing variation!

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True. BBC, Nova - pretty much every documentary concerning evolution will have an animation where a base pair substitution happens in a strand of DNA. No mention of existing variation.

So if I am taller than my brother, which one of us is the mutant?

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And no mention that the mutation could have happened thousands/millions of years before the selection started.

Neither. It’s a quantitative trait determined by multiple alleles at multiple polymorphic loci (or genes), aka QTLs.

The tendency of people to use the cringeworthy ā€œthe gene for Xā€ also contributes to confusion here.

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Gee, that sounds familiar.

I’m beginning to doubt whether you actually have read Denton, since you seem unable to describe any of their arguments any better than I have. Or maybe you tried to read them, but couldn’t understand them?

Well, seeing as how that book is now over 20 years old, there must have been lots of refining and testing of those ideas by ID scientists. Could you tell us where we could read about this?

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I do consider whether non-humans have free will, so it is an issue.

But we know that in reality humans do make decisions that affect the course of evolution and other aspects of nature. Cf human decisions to take cats to St Stephen’s Island. It is not the case that human free will doesn’t constrain God’s hypothetical ability to plan the outcome of his design, no matter what some people may imagine.

You seem to be saying only that there is a way of conceiving that front-loading and free will are compatible, not saying that there is a way in which front-loading and free will actually are compatible.

There is a way of conceiving anything imaginable (that purple push-me-pull-yous are rampaging around NY central park?) - but that has no bearing on reality.