少点错误 2024年08月10日
The Great Organism Theory of Evolution
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本文探讨了“天才”在不同物种中的存在,从人类历史中的“大人物”理论到生物学中的“希望的怪物”理论,并分析了语言能力的进化,提出了一种新的观点:或许人类语言能力的突变并非源于单个基因突变,而是由多个基因的小幅突变共同作用的结果,并与文化共同进化。

🤔 **天才的物种:跨物种的智慧** 本文以自然界中一些智力超群的动物为例,如懂得偷窃眼镜的猴子和躲避猎人的老鹿,引出“天才”在不同物种中的存在。作者认为,这些动物的智慧不仅体现在与人类的互动中,也体现在它们与其他物种以及环境的互动中,它们或许掌握着跨越物种的智慧。 一些土著文化认为,这些天才生物属于一个独特的物种,能够跨越不同物种,并拥有与之相匹配的能力,例如,它们可以拥有翅膀、鹿角、鱼鳍或人类的手指。这些天才生物在人类社会中被视为萨满、巫师或魔法师。 作者认为,我们应该重新思考“希望的怪物”理论,或许“希望的怪物”并非指形态上的突变,而是指认知能力的突变。这些认知能力的突变可能推动物种的进化,例如,一个天才的鹿可能发现了新的食物来源、新的共生关系,或者新的躲避捕食者的策略。

🤯 **大人物理论与希望的怪物:进化中的天才** 文章将“大人物理论”与“希望的怪物”理论进行了对比。前者认为,历史是由少数天才人物塑造的,例如,希特勒的出现对历史进程产生了巨大的影响。后者认为,物种的进化是由少数基因突变驱动的,例如,一个“希望的怪物”可能拥有独特的基因组合,从而推动物种进化。 然而,作者认为,无论是“大人物理论”还是“希望的怪物”理论,都存在争议。例如,希特勒的出现是否不可避免?单个基因突变是否足以推动物种进化? 作者提出了一种新的观点,即人类语言能力的进化可能并非源于单个基因突变,而是由多个基因的小幅突变共同作用的结果,并与文化共同进化。这种观点基于语言学家的研究,他们认为人类语言能力的进化可能源于一个名为“Merge”的机制,该机制可以将两个语言单元组合成一个新的单元,从而创造出无限的语言表达方式。

🧠 **语言能力的进化:一个天才的突变?** 文章最后探讨了人类语言能力的进化。作者提出,人类语言能力的进化可能源于一个天才的突变,这个突变使人类拥有了“Merge”机制,从而拥有了无限的语言表达能力。 然而,作者也指出,这种观点存在争议。一些研究表明,人类语言能力的进化可能并非源于单个基因突变,而是由多个基因的小幅突变共同作用的结果,并与文化共同进化。 作者认为,无论人类语言能力的进化是源于单个基因突变还是多个基因的小幅突变,都表明了天才在进化中的重要作用。天才的出现可能推动了物种的进化,并创造了新的可能性。

Published on August 10, 2024 12:26 PM GMT

 

From Becoming Animal (David Abrams, 2010):

Many months earlier, in a village near a wild forest preserve on the south coast of Java, I’d been warned by the local fishermen that there was an unusually bold individual among the bands of monkeys that roam the forest canopy, a particular monkey much more daring and skillful than the others, especially at stealing things from humans. Because I wear glasses, I was urged by the fishermen not to enter that forest, for that sly monkey was known to silently accompany people in the branches far overhead, waiting for an opportune moment to swing low and snatch the glasses from their face. The villagers had had to organize several search parties for missing visitors who turned out simply to have been wandering half blind for several days, unable to find their way out of the woods.

Similarly, when I lived in the northern Rockies there was an old bull elk who was legendary among the local hunters. Larger than the other males thereabouts, he had once had the biggest rack of any bull in those mountains, although in recent years (folks said) his antlers were smaller. He was glimpsed often, yet no one had ever succeeded in planting a bullet anywhere on his person. His ability to elude hunters was uncanny, enabling him to melt away and vanish even as the hunter registered the glimpse. In earlier years the locals had taken the large bull’s readiness to show himself as a challenge, with each hunter eager to finally shoot him and be able to boast about the fact. But after so many years, the old one’s continued defiance of hunters had made him not only a legend but a revered spirit among the hunters and everyone else in the region.

Hiking one October evening with a friend who’d grown up in that area and hearing now and then the most beautiful of all earth-born sounds, which is the autumn bugling of elk—there abruptly sounded from far off the most heart-wrenchingly lovely of any call I'd ever heard, a bugling that was the most full-throated and deep and at the same time the most ethereal, ascending slowly upward through a sequence of clear overtones before ending in a series of gutteral grunts. I looked wide-eyed at my friend. It was the unmistakable call, he said, of that great elder, the phantom.

In these cases, and I could mention many others, the uniqueness of the individuals seems to reside not just in their intelligence but in their skill at interacting with other species. Since we notice their uncommon savvy in their dealings with us, we might assume that these animals display such chutzpah only toward humans. But this seems unlikely. That old elk doubtless relies on his remarkable wiles in relation to other predators as well, and (I can’t help but suspect) in his relation to every aspect of those wooded slopes, to unexpected changes in the seasonal cycle, or the sudden arrival of roads, and clear-cuts, in a favorite part of the mountains.

The observation by indigenous peoples that there exist particular individuals —among other animals as among our own two-legged kind—who are in a strangely different league from their peers has led some native traditions to posit that there exists an entirely different species to which such individuals belong, a class of entities who are able to cross between diverse species, taking on the ways of various animals as needed—able to trade wings for antlers, or to forsake paws for scaly fins or even fingered hands.

This is the class of those who are recognized, when they’re in human form, as shamans—as magicians or sorcerers. But most contemporary persons, lacking regular contact with the wild in its multiform weirdness, have forgotten that such shamans are to be found in every species, that in truth they are a kind of cross- or trans-species creature, and hence a species unto themselves.


You’ve probably heard of the Great Man Theory of history.

Universal History, the history of what man has accomplished in this world, is at bottom the History of the Great Men who have worked here. They were the leaders of men, these great ones; the modellers, patterns, and in a wide sense creators, of whatsoever the general mass of men contrived to do or to attain; all things that we see standing accomplished in the world are properly the outer material result, the practical realisation and embodiment, of Thoughts that dwelt in the Great Men sent into the world: the soul of the whole world's history, it may justly be considered, were the history of these. (Carlyle)

Opponents of the theory would argue, for example, that there still would have been a Hitler (and a WWII) even if ol’ Adolf were never born.

Ian Kershaw wrote in 1998 that “The figure of Hitler, whose personal attributes— distinguished from his political aura and impact—were scarcely noble, elevating or enriching, posed self-evident problems for such a tradition.” Some historians like Joachim Fest responded by arguing that Hitler had a “negative greatness”. By contrast, Kershaw rejects the Great Men theory and argues that it is more important to study wider political and social factors to explain the history of Nazi Germany.

There is a roughly analogous debate in evolutionary biology.

According to Richard Goldschmidt “biologists seem inclined to think that because they have not themselves seen a ‘large’ mutation, such a thing cannot be possible. But such a mutation need only be an event of the most extraordinary rarity to provide the world with the important material for evolution”. Goldschmidt believed that the neo-Darwinian view of gradual accumulation of small mutations was important but could only account for variation within species (microevolution) and wasn't a powerful enough source for the origin of evolutionary novelty to explain new species. Instead he believed that big genetic differences between species required profound “macro-mutations” a source for large genetic changes (macroevolution) which once in a while could occur as a “hopeful monster”.

The simple version of the hopeful monsters hypothesis, first put forth in the 1940s, has largely been rejected as macromutations (e.g. chromosomal gain/loss) are (almost) always severely detrimental to an organism’s ability to survive and/or reproduce. Recent discoveries, namely that of master regulatory genes (e.g. Hox genes), have somewhat vindicated Goldschmidt however.

With the discovery of the importance of regulatory genes, we realize that [Goldschmidt] was ahead of his time in focusing on the importance of a few genes controlling big changes in the organisms…Furthermore, the sexual compatibility problem is not so insurmountable after all. Embryology has shown that if you affect an entire population of developing embryos with a stress (such as a heat shock) it can cause many embryos to go through the same new pathway of embryonic development, and then they all become hopeful monsters when they reach reproductive age.

The opening passage makes me wonder if we’ve been thinking about hopeful monsters in the wrong way—maybe it isn’t the morphological level that matters most for macroevolution, but the cognitive (biologists and paleontologists tend to underappreciate the importance of the latter because minds don’t fossilize and it is difficult to measure the intelligence of animals in their natural habitat). While I won’t entirely rule out the possibility of shapeshifters (a topic for another time), perhaps what these indigenous peoples are dimly perceiving is the existence of extreme outlier geniuses in other species, some of whom might be capable of altering their species’ evolutionary trajectory with their ingenuity.

What can a 6σ elk do that a regular elk cannot? Can she identify a new food source or a new opportunity for symbiosis? Can he invent a new strategy for thwarting predators? Can he lead his herd on a daring migration to a new habitat? Can she single-handedly prevent her species from going extinct?


Might one rare genius have played a decisive role in human evolution, making some great leap forward in thought which lit the fuse of gene-culture coevolution and set us on the path to advanced intelligence? At least one person, Chomsky, thinks so: “our modern language capacity emerged instantaneously in a single hominin individual who is an ancestor of all humans.”

Put simply, Merge takes two linguistic units (say, words) and combines them into a set that can then be combined further with other linguistic units, effectively creating unbounded linguistic expressions. These, in turn, are claimed to form the basis for our cognitive creativity and flexibility, setting us aside from other species.

The strongest version of Chomsky’s hypothesis suggests that the biological foundation of Merge is a single genetic mutation. Given its staggering consequences, a mutation of this kind is considered a macro-mutation.

de Boer et al. (2020) ran an simulation in order to better understand the evolutionary dynamics implied by the single-mutant hypothesis and found that, “although a macro-mutation is much more likely to go to fixation if it occurs, it is much more unlikely a priori than multiple mutations with smaller fitness effects. The most likely scenario is therefore one where a medium number of mutations with medium fitness effects accumulate”. TL;DR: unlikely things are unlikely.

The single-mutant hypothesis and the great organism theory of evolution may be unfalsifiable, but that doesn’t mean they aren’t true.


I read recently that chimpanzees do not appear to be capable of asking questions, as they have not once done so in the ~60 years we have been teaching them sign language.

Despite all their achievements, Kanzi and Panbanisha have not demonstrated the ability to ask questions so far. Joseph Jordania suggested that the ability to ask questions could be the crucial cognitive threshold between human and other ape mental abilities.

Might we still be incurious if not for a singular hominid savant who bounded across that threshold and showed his brothers and sisters what it means to ask? Perhaps we had evolved to a point where no special genius was needed to make the first inquiry, but either way there still had to be a first asker, which then raises the question: what was the first question?



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天才 物种 进化 大人物理论 希望的怪物 语言能力 Merge 基因突变 文化共同进化
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