It is demonstrably false that the mechanisms of evolution can only take place when life already exists. Evolution is not substrate-specific. It can occur in computer programs, for instance (see Arthur Samuels' world-beating checkers program).dartagnan wrote:Seriously -- there's no selection in the 747/junkyard scenario. The analogy would be much more apt if parts got locked together once they were in the right place, but even then it would have insurmountable flaws.
Um, you're right, and that's the whole point of the analogy. Thank's for illustrating the point that critics here don't even understand the analogy to begin with. But I don't expect that should stop them from pretending to have refuted it. No selection you say? Well of course not. And guess what? There's no selection going on during abiogenesis either! That's what makes the anaolgy so beautiful and effective. Your problem is that you assume the mechanisms of evolution are at work, but these can only take place when life already exists. In this instance, we're talking about pre-life events.
But you're right that there's no biological selection in abiogenesis. I was thinking of the original purpose of the tornado/junkyard analogy, which was to disprove evolution, not abiogenesis. Your adaptation of the argument threw me a little.
The problem with using Hoyle's analogy to refute abiogenesis is that its proponents don't define "life" with the same specificity as the 747. Until you unequivocally state what you believe constitutes the first life form, there's no way to have a fruitful discussion about the possibility of abiogenesis.
Kevin, naturalism does not preclude God. If God existed, He'd be part of the natural world, which naturalism surveys.The dogma of naturalism supposes that life came about by the blind forces of nature.
Which is all completely implausible, of course. Oh, wait -- no, it isn't. Especially compared to the hypothesis you promulgate.Somehow, somewhere, at some time, some liquid got mixed in with some gases (they can't seem to make up their minds which liquids or which gases), which received a shot of lightning and perhaps a dose of radiation from a solar flare or whatever.
Actually, Frankenstein's monster was intelligently designed. Its creation mirrors your explanation for life on Earth much more closely than mine. Way to saw off the branch you're sitting on, Kevin.Who knows, maybe there was a ful moon too. This is the quintessential Frankenstein hypothesis. But we can't call it what it is because that sounds more fictional than scientific!
This is a brazen strawman. A few weeks ago, you were mocking Richard Dawkins for admitting the precise logical opposite of what you're currently putting into his mouth. Dawkins is representative of naturalists when he says that he doesn't know how abiogenesis happened, then goes on to describe the most plausible theories.Naturalism supposes that "whatever it was," that happened, life naturally appeared from non-life. People don't generally understand how ridiculous this is because they don't really spend a lot of time thinking about it. So the analogy puts it all into perspective for us. And this is why the atheists hate it so much. They can't refute it and it makes them look just as silly as any religious nut. It reveals just how much blind faith they have in naturalism. It would be more intellectually honest if they just said they don't know. But they insist they do know. It happened by natural forces (wind, rain, comets, solar flares, llghtening).
A million tornadoes isn't nearly a big enough number for it to be analogous to the factors that effected abiogenesis. The Earth is a big place. There were many, many more chemical interactions on the planet -- trillions, at least -- before the first organic molecule appeared.So fine, that complaint is easy to remedy. So let's just suppose a million tornados hitting the same spot over the course of three billion years. Doesn't have to be a junkyard. It could be a sea containing every element there is. That should be enough material and enough time. But there is still no reason to suppose it would produce a Jumbo Jet. So why would we suppose it would produce the first living cell?
Sure. But NOBODY believes that the molecule that kicked off the procession toward life was a fully-functioning cell. How many scientists working on abiogenesis-related topics are trying to figure out how to throw common chemicals together randomly to get a living cell? Answer: none of them.If we think about it, this analogy is really way off because it is too generous. Why? Because the simplest living cell is infinitely more complex than the most technologically advanced aircraft.
Incidentally, your argument here IS Intelligent Design:
I will now discuss how I view the future prospects of a theory of intelligent design. I see them as very bright indeed. Why? Because the idea of intelligent design has advanced, not primarily because of anything I or any individual has done. Rather, it’s been the very progress of science itself that has made intelligent design plausible. Fifty years ago much less was known about the cell, and it was much easier then to think that Darwinian evolution was true. But with the discovery of more and more complexity at the foundation of life, the idea of intelligent design has gained strength. That trend is continuing. As science pushes on, the complexity of the cell is not getting any less; on the contrary, it is getting much greater.
http://www.discovery.org/a/1205
What is a cell's "life" except its structure? You might as well be talking about elan vital.And this analogy only addresses its structure, whereas a cell has not only structure, it also has "life."
Why would a zombie be less alive than a jellyfish? What's the significant difference between the two? The thinking you deplore here is actually pretty standard. Even the theistic Descartes described animals as nothing more than very complex machines.Now Tarski sympathizes with people like Daniel Dennett who are functionalists and suppose things like machines, zombies or computers are as much "alive" as organisms snce they move around and serve a function. I'm really hoping that is how most atheists end up arguing.