funkyderek,
:: No I wouldn't, any more than I would say that modern elephants should be bigger or smaller than elephants 4000 years ago.
Language on that time scale is shaped far more by cultural evolution than biological.
::You really seem to have a problem with the timescales involved. We're not talking about something that happened in the last 10,000 years. If you think we are, then you're in the wrong argument.
For now I guess you are right to a certain extent when saying I may have confused the debates, but I'm not sure when exactly you think "cultural evolution" began. I assumed that ultimately cultural evolution is restricted by biological evolution. Thus both kinds of evolution must have run in parralel. Admittedly, for the last 2000-3000 thousands years cultural evolution has progressed exponentially and with an easly noticeable speed, but originally it still must have depended on what you've called the "brain growing beyond a certain point".
Let me illustrate this point with an example:
Let's imagine you can travel in time 5000 years back and somehow bring a human child of some relatively intelligent parents "back to the future".
If you brought this child up in our culture, the child would have no problems with functioning in society, receiving education, and possibly becoming a rocket scientist. No culture shock here, right?
However if you took a humanoid child born say 2,000,000 years ago, the child could have problems with adapting because of the biological limitations of the its brain.
I guess there's little we disagree about so far. Correct me if I'm wrong.
Now what timescales do I have in mind when I say that we could find out something about the evolution of human language by taking into consideration cultural evolution? I would say: let's agree about a conventional point in time when - as we might possibly assume - humanoids started spreading around the place where they originated from.
If you think there was no single central geographic location from which humanoids originated, then it's going to make my argument easier.
However I am assuming you think that all contemporary humans have common ancestors who could be traced back to a certain area of our planet and a certain point in time when they started to differ considerably from other apes.
Ok, so what? The next thing we have to agree about is that at some point different groups of humans/humanoids started separating. How long a distance do wee need to expect independant language development to take place? With no means of transport other than their feet (be it even 4 feet), let's say it could have been 100 kilometers. That's more than necessary - one can find dozens of examples of great linguistic variabilty in today's Africa with the distance being under 30 kilometers form one village to another.
To sum it up: When could humanoids have started forming their first separate proto-cultures? What is the earliest possible "date" that can be reasonably suggested?
That's another one of my Socratic questions, but it will let me know if I'm "in the wrong argument" indeed.
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Just to give you an idea of the kind of linguistic arguments I want to make which I think cannot be well explained by evolutionary processes (they correspond to the first 2 questions I asked in my previous post):
1) Ever since we can know directly and indirectly, all known languages have been generally becoming simpler in terms of morphology, syntax and to some extent phonology.
2) The relative complexity of languages which have been developing for
________(please specify my timescale here according to the guidelines provided above)_____
of years independently of one another cannot be explained in terms of cultural development. In other words there are no primitive languages. Rather, what is genuinely surprising is that some of the most primitive cultures have languages extremely complex grammars, and vice versa.
3)
I also think, there's one thing about language that is well explained by the evolution of the human brain. It has to do with the fact that the very nature of human language suggests that historically all abstract concepts were derived from literal ones.
I won't elaborate on these points until you tell me what my timescales are and whethere they make my points relevant to the discussion on certain aspecs of evolution.
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By the way: In your little theory:
Language is not really my area but whatever. How about this: the ancestors of humans had the same ability to communicate as modern apes. As their brains grew beyond a certain point, so their ability to consider and communicate complex ideas also increased. This conferred such a survival advantage that it led to a sort of runaway evolution, with brain size and complexity of language increasing in parallel. That's just off the top of my head, but I don't see anything implausible. If you want to argue details, then go ahead.
I can't really see any details we could argue. Well, at least not if you disregard what language is and what the nature of liguistic change and variability is as we know it nowadays. I can only see two other methods of theorizing on your timescales, both of which are indirect and both of them require an awful amount of wishful thinking:
a) computational simulations of brain evolution (the only ones that I am remotely familar with are connectivist models)
b) research in animal communication (this is a syncronic approach and not a diachronic one - so it's not directly verifiable)
Is there anything else we can seriously discuss? I mean I consider this:
:: This conferred such a survival advantage that it led to a sort of runaway evolution, with brain size and complexity of language increasing in parallel.
a rather metaphysical statement. There are some obvious logical premises for saying this sort of thing, but I can't see how this statement can be verified.
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::Heh. I don't believe that for a second. But never mind. The Socratic Method is a perfectly valid tool of debate. Using it pre-emptively is a little strange though. Still, maybe this is the only subject you know anything about.
Maybe it is "the only subject I know anything about", maybe it isn't even that - I don't think you can know it. I started with the sarcasm though - and it was your turn now, so no comments here.