i don't know if you've gotten to the part, but the place i found most interesting and most compelling, was the idea that syntax developed because of our increasingly complex human interactions in a social order. it's in the second half of the book, related to some 10+ year-long daily studies of a group of apes (I can't remember -- apes, monkeys, chimps...?) Anyway, they have to understand the social hierarchy in their own family, how their own family fits in the larger social hierarchy of other families, and then to be able to determine how a couple of individuals from different families should relate to one another -- they have distinctive calls indicating superordinate/subordinate. Anyway, if I'm remembering correctly, the idea is that the capacity for syntax is related to this same capacity that must have developed in tandem with increasingly complex and interdependent animal societies.
Like I said: the part that fascinating me the most was the social and cultural aspects of the research.
enjoy!
shag --
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