Valid qualifications for the interpretation of the data, to an extent, I think, but none of them invalidate it. While modern hunter gatherers probably arent 100% comparable to ancient ones, they are the best representation that we have. Its important to note that pinker provided a range of data for the modern hunter gatherers, and its a wide range. Its reasonable to assume that ancient populations would widen the range even more - that there would be murder rates above and below those there. That doesnt invalidate the synthesis of the argument; that any data you can find for it shows that youre more likely to be killed by another person (intentionally at least) in a hunter gatherer society than you are in a modern 'developed' society. The data for ancient societies would have to be different to that for modern hunter gatherers by orders of magnitude for the point to be different, and I dont see that happening (of course I cant know this, but its a falsifiable position at least).
The most important point being made there is the alteration in the acceptable standards of violence. Here, now, we have people that are dubious about the killing of bin laden. Our tolerance for capital punishment is somewhere between low and zero in developed societies. But, as stated in the vid, no one batted an eyelid 500 years ago at being brutally exceuted for calling the king a bad name.
Some of the reasons he suggests for this can qualify the exclusion for consideration of many modern global populations. It hadnt escaped my attention that he leaves out many wars and genocides in, say, africa. The situation/s in there are poor enough that you can damn near throw a dart at a map and hit somewhere that theres been a war or genocide or tyrannical dicatotorship or oppressed population in the last 20 years far more egregious than anything europe has seen in centuries (save the holocaust).
Thats kinda part of the point; the same forces havent shaped, or yet had the chance to shape those societies, and what we're really talking about here is societal evolution. We live in a post renaissance civilisation of civil rights, democratic republics where to overthrow a government you get enough people to put a tick in a box, police and courts to mediate and moderate our vengence and prevent violation of our rights, trade with other nations and mutual cooperation in general leading to reduced hostility due to codependence, media coverage of wars and conflicts increasing our awareness of them and lowering our tolerance for it etc etc etc etc. Much of the world doesnt have this. Why? Thats a topic for a naomi klein book, I think :lol: But the fact is that, within the working definition of 'modern' for his argument (not just 'alive now' but post-renaissance democratic society) not everywhere on earth is 'modern', and so that regions lacking the pacifying infulences and forces in their histories that he argues have made us less violent, there is more violence. It adds up well.
It boils down, I think, to an argument whereby in the places and histories where such pacifying ideas as hobbes leviathan and freedom of speech and democratic goverments have arisen and taken hold, it begins a feedback trend whereby lowering the need for/benefits from violence lowers tolerance for violence and so lowers violence and so again lowers the need for/benefits from violence, and so on and so forth. There are no such factors at play in a hunter gatherer society, no developed and, as importantly, developing philosophical and sociological basis for the intentional construction of a more passive society, and in point of fact a society that prospers from being passive; theres only inherited tradition (little to nothing in the way of documented ideas upon which more can be built; no printing press!) and so levels of violence are directly related to geological and ecological happenstance. Hence very variable, yes, but also potentially unrestrained by social forces; in point of fact, force rules. They may not need to use it, but at the end of the day 'we can kick the shitee out of you and take the food you've gathered' is a high risk but high payoff strategy that doesnt really fly today. Except under bush&blair and if you replace food with oil. There are always going to be exceptions :(
Edit: good thread indeed. Not really my area, I'm out of my element and quite probably in over my head, but interesting :)