None of this seems unreasonable to me. I had the idea from the opening post that this was a Nature vs. Nurture argument and Vygostsky took the side of Nurture.
But now it seems (with Conrad and apeiron's contributions) more that Vygotsky only makes the point about Nurture's contributions, not claims they're the end-all.
It seems to me, anyway, that the Nature vs. Nurture arguments is long dead. Nature and Nurture are shown to be coupled to each other; this should be especially clear in the wake of the "junk DNA" and epigenetics. Protein action can effect genes, genes code proteins...
proteins interact with neurons, which interact with stimuli, which come from the environment. There's an obvious Nature side to our higher mental functions (the evolutionary developments that allow us to have larger brains in the first place also constrains how the brains must operate.) And then coming, full circle, the evolutionary development of the brain is guided by stimuli from the environment. This is actually very exciting for neuroscience:
An organism's behavioral and physiological and social milieu influence and are influenced by the epigenome, which is composed predominantly of chromatin and the covalent modification of DNA by methylation. Epigenetic patterns are sculpted during development to shape the diversity of gene expression programs in the organism. In contrast to the genetic sequence, which is determined by inheritance and is virtually identical in all tissues, the epigenetic pattern varies from cell type to cell type and is potentially dynamic throughout life. It is postulated here that different environmental exposures, including early parental care, could impact epigenetic patterns, with important implications for mental health in humans. Because epigenetic programming defines the state of expression of genes, epigenetic differences could have the same consequences as genetic polymorphisms. Yet in contrast to genetic sequence differences, epigenetic alterations are potentially reversible. This review will discuss basic epigenetic mechanisms and how epigenetic processes early in life might play a role in defining inter-individual trajectories of human behavior. In this regard, we will examine evidence for the possibility that epigenetic mechanisms can contribute to later-onset neurological dysfunction and disease.
http://www.ncbi.nlm.nih.gov/pubmed/20053376
Here, we're particularly interested in stimuli from other members of our species, or even other species (which we call social). But we still have a very powerful source from Nature to consider that drives social development: sync. This is beyond genes, even: our solar system's dance gives us night and day (earth's rotation), months (moon cycle), seasons and years (earth's orbit).
The way sync appears in the social context (as in syncing behavior of members of a group of organisms) is fascinating... but what's even more fascinating is the feedback loop that develops between Nature and Nurture across many spatiotemporal scales in this view.
Strogatz (Author of "Nonlinear Dynamics and Chaos" textbook) on sync:
http://www.ted.com/talks/steven_strogatz_on_sync.html
I have no doubt that the development of language has greatly influenced the Nature of man. That should be a rather uncontroversial statement.
The only question I have at the moment is how we know whether another species has an equally complex and articulate language that we don't happen to comprehend because we weren't raised (socially "encoded") by these species, and once we have an example of someone who is (animal raised feral children) ... we don't understand them (or they us) enough for such an inquiry.
I think dolphins could be such a candidate. While looking at other primates is interesting because we're primates, we tend to forget that all the other species (including other primates) have evolved in parallel with us.
What's particularly motivating for me is that I have experience with wild porpoises (I used to fish commercially) who like to play with humans (no, we don't give them our fish) and have been known to save humans, even. And these aren't even dolphins (who have the second highest brain/body ratio next to humans).
But here's a more expert opinion:
Like most other animals, dolphins do have communication. Their squeals and whistles communicate emotional states and, often, the presence of danger and food in the area. They may also help them coordinate “herding” processes. Dolphin females often act as “midwives” to new mothers, and every dolphin in the pod cares for the others.
But do they communicate linguistically? There’s some evidence for it. Dolphins tend to stay within their own pods, and may have trouble understanding “foreign” dolphins. In studies done on dolphins near Scotland, individuals appear to have names; or at least, other dolphins use specific and unique whistles only in the presence of certain other dolphins, as if calling them by name. Unlike any other animal besides humans, dolphins exhibit a great tendency to take turns when vocalizing – making their communications sound like a conversation.
There have also been very basic linguistic studies of dolphin sound patterns. According to some studies, dolphin sounds follow the same basic patterns of all human-based language, from Morse code to Chinese. Though we cannot understand what they’re saying, it’s not beyond the bounds to state that dolphins may indeed have language, though it’s certainly a language unlike any we know today.
http://www.dolphins-world.com/Dolphin_Language.html
(bolded mine, note: not a scientific study, don't know the author, but summarizes a nature show or two I've seen)
Anyway, my point being that if these findings are accurate, then apeiron's demands might be met by Dolphins:
apeiron said:
The animal sense of self would be the completely subjective emboddied form. The point about humans is that we carry around in our heads a second "objective" view of ourselves - the view that society would have of our actions and our existence. Our every emboddied response or impulse is being run through that secondary layer of ideas that is socially evolved.