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Gu Chi
2007-06-18 20:24:38 http://epr.ycool.com/ [reply]
This kind of “theory” of mine is not entirely without scientific significance. It could still guide empirical research: for example, one could carry out statistical research on large populations of bonobos—examining the relationship between the degree of spinal erectness and the frequency of face-to-face sex; and the relationship between the frequency of face-to-face sex and the total number of sexual acts. If both of these relationships are positively correlated—no matter how slight the degree, so long as the correlation is statistically significant—then, in accordance with Darwinian evolution, the hypothesis that face-to-face sex promotes human bipedalism could be supported!
Even without empirical support, this set of “theories” fits my basic view of humanity extremely well. Put simply, for me, being human means “starry sky + love.” “Rain” is born of the starry sky, and dies for love.
I could go off and become a pseudoscientist!
luxin
2007-06-19 18:20:14 Anonymous 124.17.17.32 [reply]
Statistical results cannot explain any causal relationship.
Gu Qi
2007-06-19 19:10:17 http://epr.ycool.com/ [reply]
It cannot prove anything, but it can support something.
Although I have been far away from mathematics for many years, I still know the basic common sense of statistics. In particular, for doctrines like Darwinism, statistics is of great significance. Even in physics and chemistry, you cannot do without statistics.
Hume’s problem shows that, in fact, nothing can prove “causality”; thus the reliability of induction has to be appealed to through statistics.
I don’t know whether what luxin means by saying that statistical results cannot explain any causal relationship is directed at statistics or at evolution theory. For neo-Darwinism, this kind of statistical data is something they would gladly beg for; in fact, they still find it hard to obtain strong statistical evidence, and evolution theory has been challenged on this point many times.
This kind of statistics can only be spoken of; if you really go and count, you cannot get results, because to make such a Darwinian hypothesis of gradual evolution supported by statistically significant positive correlations, the sample required would probably have to be in the tens of millions or more. Bonobos clearly do not exist in such numbers, and even if they did, no one could observe that many samples, so empirical research is almost impossible.
luxin
2007-06-22 22:48:38 Anonymous 124.17.17.32 [reply]
We must have an a priori estimate of the problem before we can make meaningful statistics; mere positive correlation says nothing.
Gu Qi
2007-06-22 23:14:17 http://epr.ycool.com/ [reply]
I’m not clear what you mean by “a priori estimate” and “says something” either.
A mere positive correlation really does not explain anything, but under a certain hypothesis, if one finds statistical results that support that hypothesis, then those statistical results are meaningful.
There is a question in Darwinian evolution that is often taken to task: for example, how did things like eyes and wings evolve? According to Darwinian evolution, evolution is gradual. That is to say, it is impossible for one generation of organisms suddenly to go from having no wings to growing fully formed wings. Then, apart from the challenge posed by the lack of fossil records for intermediate forms, there is another theoretical challenge: what use is 1 percent of a wing? Since the evolution of wings from nothing to full form is slow and gradual, that means mutants with 1 percent wings should have a survival advantage over their wingless peers, and those with 2 percent wings should be stronger than those with 1 percent, and so on. This is exactly how neo-Darwinians explain it. They would say that even a small wing of 1 percent—that is, say, a little extra thing on the forelimbs that increases buoyancy—would increase the animal’s survival advantage by even 0.1 percent; anyway, there is always some tiny benefit, such as being able to jump a little farther, or to jump down from trees a little higher without getting hurt (because the drag is increased just a tiny bit), so the survival advantage is always more or less increased by a little bit. And the process of evolution is long; even an extremely weak advantage may be continually reinforced over the course of long natural selection, ultimately causing species to keep evolving in one direction. These are not my words; you can look at books written by Dawkins and other neo-Darwinians—they say exactly this. And borrowing the Darwinian way of thinking, I hypothesize that if the spine is made just a little bit more erect, then one will be a little bit more adept at face-to-face X; and if one is a little bit more adept at face-to-face X, then there will be a little bit more chance of passing on the family line; and if that is indeed the case, then it can support the hypothesis that a preference for face-to-face X promoted natural selection toward a more erect spine.
Of course, if luxin wants to oppose neo-Darwinism, then I would raise both hands in support. Neo-Darwinism is far too arrogant; it really isn’t that great.
Gu Qi
2007-06-22 23:25:14 http://epr.ycool.com/ [reply]
In the past, evolution theory used natural selection to explain how humans evolved bipedalism, and also explained the benefits of bipedalism by saying that it freed the hands for tool use. Its argument was roughly this: the more slightly erect the spine is (even if only just a little, because Darwinism emphasizes gradual change), the better one becomes at using the hands; the better one becomes at using the hands (even if only just a little), the greater the survival advantage the offspring will have (even if only a little greater); after long periods of natural selection, the overall trend of evolution will move toward a more erect spine. This is the explanation of how an erect spine could possibly have evolved.
However, Zhu Haijun says that humans did not evolve toward bipedalism in order to free the hands, but rather in order to engage in face-to-face X; yet he rejects Darwinism and chooses Lamarckism to defend himself. What I want to say is that this kind of statement does not require abandoning Darwinism. One only needs to use sexual selection in Darwinism rather than natural selection, and it can be explained. The method of explanation is exactly the same as the one above. If my hypothesis has no empirical significance whatsoever, then Darwinism’s own account has no empirical significance either.
Yi Wu
2007-06-28 19:31:56 [reply]
Writing for the second time below (the clipboard just broke a moment ago, 555)
How come I never saw this post? It really is an interesting idea. Still, I don’t have much to say; I haven’t read the original *On Evolution* or Dawkins’s original works, so I’ll have to make up for my lack of scientific knowledge later…… Otherwise I won’t have any confidence when I speak……
This is the first time I’ve heard of the view that natural selection and sexual selection act at the same time. But a few days ago I saw an article written like this: in deer herds, when mating season comes, in the earlier phase, the big-antlered, strong males have more mating opportunities, but in the later phase they have mostly exhausted their stamina in advance, and can only leave the remaining opportunities to ordinary males. In the end, the researchers tallied it up and found that, in fact, their final chances were roughly equal!
How do you put that?
——————————
“Born of the starry sky, die for love”
Isn’t this a case of intertextuality?
Even if science doesn’t back it, it is still a very worthwhile personal belief to encourage……
Would it be okay to change “love” directly to “love” in the broader sense? More broadly speaking. (That would make it more in line with Fromm, and of course with comrade Yeats as well—“love one another, or die.”)
Gu Qi
2007-06-28 20:22:19 http://epr.ycool.com/ [reply]
One thing that makes humans more distinct is that humans do not have an “estrous period,” and there is no problem of exhausting one’s stamina too early.
I’m not too clear about the deer issue, but in any case, even if the mating frequency is equal, the ones who mate first always have a better chance than the latercomers of making the doe pregnant, don’t they? If conception succeeds at the outset, then later mating is useless.
I’m not familiar with Fromm or Yeats. Love is of course humanity’s most precious capacity, but for me, love in the narrow sense occupies an unshakable place. Just as I revere all the beautiful sights of nature, yet the starry sky is unique—nothing can replace the starry sky; nothing can replace love.
Gu
2007-06-29 09:07:14 Anonymous 211.145.12.70 [reply]
Of course, in evolution theory, natural selection and sexual selection do not occupy equal positions; natural selection is after all the core of Darwinism, and sexual selection must ultimately still submit to natural selection: for example, suppose a species splits into two major groups, where the females of group 1 prefer characteristic A, while the females of group 2 prefer characteristic B. After a long period of sexual selection, in the descendants of group 1, 1′ , characteristic A will be strengthened, while in the descendants of group 2, 2′ , characteristic B will be strengthened. And the two groups 1′ and 2′ may still compete for survival; if the strengthening of characteristic A is more favorable for survival competition, then after another long period of natural selection, the population with strengthened characteristic A will gain the advantage. So in this situation, from the long-term point of view, natural selection is still fundamental, and sexual selection can be ignored. However, in some closed environments, sexual selection may still exert an influence.
Translated from the Chinese original with AI assistance. The original text is authoritative.
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