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Albert Cipriani:
Yes. I meant to say that my theological and philosophical pre-conceptions animate my antipathy towards the theory of evolution, not that either can be brought to bear against evolution.
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Thank you for the clarification. I believe that this is virtually always the case with creationists: it is not the evidence that has lead them do doubt evolution, but that for philosophical reasons they do not wish evolution to be true. A simplification, perhaps, but it is important to note that science works from the evidence up. The evolution of living things by descent with modification from common ancestors is accepted by scientists as a fact because of the overwhelming evidence for it and the complete lack of evidence against it. The theory of evolution is accepted as the explanation for this fact because it has proven extremely successful in generating empirically testable hypotheses, has been extraordinarily good at predicting outcomes, and has done a remarkable job of explaining how evolution can proceed. Plus, there is no other scientific explanation worth considering. Of course, there are plenty of unscientific explanations out there, but they are not the subject of scientific inquiry.
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Finding a "hairy fish with digits" or "placenta-born feathered crocodile" would not pose any problems at all for the theory of evolution.
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But digits are not a morphology of fish. According to the cladistic scheme of things, morphological changes are not a free-for-all. Some changes ought not to be possible. Otherwise, it would seem that Douglas Theobauld Ph.D. at TalkOrigins would not have written:
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It would be very problematic if many species were found that combined characteristics of different nested groupings… A mix and match of characters like this would make it extremely difficult to objectively organize species into nested hierarchies." [29 Evidences for Macroevolution Part 1: The Unique Universal Phylogenetic Tree Copyright © 1999-2002]
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I thought the nested groupings of the Phylogenetic Tree was a central proof for the theory of evolution? But if branches of the Phylogenetic Tree can crisscross and graft themselves, if anything is possible, then doesn't the evolutionary theory fail to be predictive? If evolution allows for any kind of change whatsoever unfettered by prior morphological divergences, then the theory seems no more than a restatement of the infamous "God works in mysterious ways" bromide.
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In your post that I was responding to, you stated:
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Right off, I accept all of your definitions.
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One of the definitions that I gave, in the post that you were responding to, was:
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The definition that is typically used by scientists, and the one that applies to the theory of evolution, is the first one given in the Webster's dictionary that I happen to have handy:
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The analysis of a set of facts in their relation to one another
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In the case of the theory of evolution, the "set of facts" is the evolution of living things through descent with modification from common ancestors. I don't want to get into a semantic argument, but it would be helpful if you could indicate exactly what definition of "theory" you are using.
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However, you are still confusing the fact of evolution with the theory of evolution. I agree that
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It would be very problematic if many species were found that combined characteristics of different nested groupings
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, but problematic for common descent, not the mechanism of evolution. The "nested hierarchies" referred to are common descent. By the way, note that "hairy fish with digits" is not a good example of "combined characteristics of different nested groupings" (the nested group that incudes all fish also includes mammals). A "placenta-born feathered crocodile" would be better, such a creature would certainly challenge the pattern of evolution that has been accepted, but would not have anything to do with the mechanism of evolution.
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If you have found some flaw in my [evolution of altruism] model, please point it out.
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I detect no flaw in your model as a description for kin selection or reciprocal altruism.
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It has nothing to do with reciprocal altruism.
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Its disconnect lies between how those instinctual forms of altruism developed and how human altruism is presently manifest.
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As I have explained, human behaviour is complex and not well understood. You have, if I understand you, argued that altruism could not have evolved by the mechanisms of the theory of evolution:
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When evolutionists attempt to "explain" altruism between family members as the result of altruistic family members having family members, they've committed the circulus in demonstrando fallacy. They've assumed what they need to argue.
Oolon and you collectively seem to me to be doing that when you assert kin selection as a theory for "explaining" altruism when altruism, by its metaphysical nature, is actually induced by our sense of kinship. It's kind of like tautologically explaining her red dress as being, well, red.
But somewhere along the line of dominoes we must assume the emergent property of empathy required some sort of operative shove in the form of a genetic mutation. The single mutation that was operative amidst all the other precursory mutations is the one under scrutiny.
Point is, evolution must at some point have stepped up to the plate and mutated one domino that set the others off and caused a single ancestor to express altruistic behavior.
Assuming the mutant's altruism does not prove to be lethal to its chances of getting reproductively lucky, its offspring would be under the same disadvantage. If we invoke isolation as the incubator of this mutant population, it only seems to extend their day of reckoning. An entire village of such mutants seems no less likely to be doomed amidst villages of their less scrupulous competitors.
Altruism seems survivable only if the entire species were simultaneously afflicted with its proclivities. How altruism could emerge in one-zies and two-zies as evolution demands, seems untenable.
The evolutionary principle remains the same: the mutation incrementally improves the odds of the mutation's replication. But when the mutation is for altruism, a monkey wrench is thrown into the works of our evolutionary descent.
Altruism has survival value for the species but not the individual who practices it. Ergo, my conundrum over its emergence.
But how is altruism competitively advantageous to the altruistic individual who practices it? What chance have the altruistic alleles got of getting replicated when they program their host to be predisposed to self-sacrifice? Evoking kin selection as an answer only seems to beg the question in that the first altruistic individual -- not his/her kin -- is the one who is carrying the altruistic torch that needs to get passed on.
The group may reap empirical benefits from it, but the altruistic behavior necessarily reaps the altruistic practitioner. That's why I don't think it has a natural explanation.
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I have simply shown that altruism can evolve by simple, natural mechanisms.
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As you put it:
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Eventually a second mutation results in another new allele that results in the gronk being more likely to eat an egg the less it smells like its own. This would make the gronk less likely to eat its own, while still being able to take advantage of the food that other eggs might provide. Such individuals would tend to have an advantage, obtaining more food than their fellows but retaining the low egg mortality.
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Using your illustration, from such humble beginnings, how would we explain modern-day Gronks that ate no eggs even if they were starving to death?
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You would first have to demonstrate that any such animals exist. Even so, it would not be that hard to explain. Natural selection is not prescient: it does not favour traits that will, only in the future, become useful. Also, evolution by natural selection is not a perfecting process, it is an opportunistic process. For example, a spider can easily starve to death while standing on a pile of food 10,000 time its own mass, just because it won't eat it. It has evolved behaviours that don't include feeding on things that don't move.
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That's another way of asking you about the altruistic behavior illustrated by the Donner Party.
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?
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In short, your model seems to me to be a perfectly rational model to describe maternal instincts and etiquette, not to describe human altruism.
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It does not address maternal instincts and it was not presented to describe human altruism.
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But you said:
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I don't want to get into a discussion of what ‘instinctual' means.
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I've already demonstrated what a pushover I am when it comes to definitions. I'm sure whatever you say it is would be just fine with me. In the absence of your formal definition, couldn't we agree that instinctual behavior is autonomous behavior, while all other behavior is conscious?
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I am afraid that you are not aware of the difficulties involved in such a simplistic attempt to distinguish these concepts. In any event, you have only replaced one set of terms for another, rather than actually define them.
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If you accept my working definition that instincts are autonomous, then a cursory analysis of ourselves will reveal that our altruistic tendencies are not instinctual.
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This is far from obvious.
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Indeed, it's our recognition of the non-reflexive and highly reflective origin of human altruism that prompts us to award medals for it.
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This is a non-sequitur.
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The neighbor who extracts a child from a burning home into the arms of its cowardly parents is not programmed to do so.
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Instinct is not the same as programming.
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But the brainwashed cult member programmed to light himself on fire for world peace does so without it qualifying as human altruism.
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I do not agree. If nothing else, it seems to contradict your own definition:
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Human altruism may be defined as the sacrifice of one's personal needs for one's perception of another's needs.
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The cult member mentioned apparently did sacrifice their own needs, and they did so specifically to provide for the needs of others (in the perception of the cult member, however misguided).
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You are assuming that the Neanderthals were forced to eat less if they did not eat their dead. This might be true, but then again it might not if they had plenty of other food available.
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We're talking about a group of hominids who were going extinct under the weight of the advancing ice sheets. Seems reasonable to assume food was at a premium.
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You are making yet more assumptions. Did neanderthals go extinct, or did they meld with other
Homo sapiens? Did they starve, or did they freeze to death, or did they die from disease, or were they slaughtered by other
H. sapiens, or were they eaten by bears? Did they become cannibals at the end as they were starving? I really do not understand why you are dwelling on neanderthals anyhow.
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In fact, cannibalism can be very dangerous: eating members of one's own species is much more likely to pass on diseases than eating members of other species.
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Yes, we know that. But they could not know that.
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Actually, they could. However, there is no need to assume that they did. We are talking about natural selection, and what adaptive advantage cannibalism might have. If behaviours that make one a cannibal reduce the individual's chances of survival and reproduction, natural selection will tend to remove such behaviours whether or not the organisms in question have any idea that cannibalism might be a bad idea.
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The Kuru peoples as late as 1950 did not know that. Hence, our present-day knowledge that cannibalism is not good for our health cannot serve as an explanation for why Neanderthals buried their dead.
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I never suggested that the
knowledge that cannibalism was bad was an issue.
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The burying of dead bodies helps reduce the spread of disease, and so could have begun to serve the needs of the live Neanderthals doing the burying.
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Again, Neanderthals could not have known this. I think it's more reasonable to accept my assumption that they went to the trouble to bury their dead out of altruistic concern for their dead than to accept your anachronism.[/b]
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Again, the
knowledge is not the issue (even though you have
not demonstrated that neanderthals did not, or were even unlikely to have, known that dead bodies can be hazardous).
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All this is moot. I have already demonstrated that altruistic behaviour can evolve naturally.
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You've illustrated how autonomous repetitive non-cognitive behaviors could have arisen.
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Please don't muddy the waters with excessive jargon. I have presented a model of how altruistic behaviour can evolve.
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There's nothing in what you've said that should lead one to believe that such instinctual behaviors could crossover into an expression of human altruism, which is variegated, unpredictable, yet calculated.
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Please explain exactly how it is that human minds make decisions, moral or otherwise. A brief explanation of what thought is should help to put this in context.
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Altruism is not restricted to humans.
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For example, army ants encountering a stream of water they cannot ford will sacrifice themselves by linking up into a bridge of bodies for the colony to walk over.
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That is not an example I would have chosen.
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If they did this for caterpillars or even other ant colonies, I could accept it as altruism. Since they only do it for their own colony, I can only see it as a species of kin selection.
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It can be argued that kin selection is responsible for altruism, but we don't even have to here. Since you brought up ants, there are ants which "enslave" ants from other colonies to work for them. These enslaved ants work away, without any benefit at all. Why? Because their behaviour is not perfect, they can be "fooled." A behaviour that has evolved through kin selection (cooperation with other colony members) has been generalized so that the ants are doing something that natural selection certainly does not favour. In the same sense, altruistic behaviour that evolved through kin selection in humans (cooperation with other tribe members) could easily be generalized to include cooperation with other humans. (Please do not insult both of us by suggesting that this would make altruistic humans slaves. I am simply explaining how a behaviour can be generalized.)
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This kind of altruism in Nature seems qualitatively different than the kind I'm calling human altruism.
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You have chosen one particular example of altruism, and ignored all the rest. Not only that, but you have not established that it is "qualitatively different than the kind (you're) calling human altruism."
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Albert: "Ergo, you are asserting that if human altruism is an adaptation, evolution selected it because of its competitive advantage."
Peez: "Although I made no such assertion, I do now."
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Doesn't that seem counter-intuitive?
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No.
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I think human altruism sets us back.
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I don't see this at all, in fact I see the opposite. However, what altruism does now is not so relevant as what it did as we evolved. It has taken us about 6,000,000 years to evolve from our most recent common ancestor with chimps, and we were likely already living in small tribal groups then. For the first 5,990,000 years or so since then, we all seem to have lived in small tribal groups, and very few of us lived in anything larger for the first 5,999,000 years or so.
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Sure what evolutionists call "reciprocal altruism" and "kin selection altruism" has given us a competitive advantage.
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What is an "evolutionist, exactly? I think that what you mean here is "scientists" (are you a gravitist? A heliocentrist? An atomist?
). More to the point, you seem to be trying to divide up altruism based on how it evolved, rather than any difference in the altruism.
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But the peculiarly human form of altruism commonly expressed in our willingness to die for an idea, religion, or boundary line on a map seems decidedly disadvantageous.
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Many assumptions are being made here. First, it should be noted that most people that I know would not sacrifice their life for an idea, religion, or boundary on a map. I do know many who might sacrifice their life (or at least risk their life, which is
not the same thing) for their family. I can easily imagine that kin selection was responsible for the evolution of behaviours that tend to make an individual willing to risk sacrifice for the good of a small tribal group that shares many of the individual's alleles. Once these behaviours evolved, they would be advantageous as long as these individuals remained in small tribal groups. Once these tribal groups had grown, and accumulated technology, and become urbanized, and individual organisms found themselves in a very different social environment, the behaviours might still be an advantage or they might not, but either way they would
not disappear instantly. Trying to base models of selection on the current human condition is vain.
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Indeed, I can conceive of no human activity more destructive to our species than human altruism as it is most typically practiced with such dismal regularity – war.
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War is exactly what one would expect if altruism had evolved as a behaviour that tended to make one sacrifice for one's own group.
Peez