@fulhamish,
"@ Dexter, firstly, and most importantly, I am glad that we have a measure of agreement on the application of the scientific method to Natural Selection and its abuse by those with an agenda of some kind. Excellent."
Just to be clear, I see this primarily as a problem that crops up in communication between scientists and non-scientists (such as journalists - taking quotes out of context or without understanding, etc.) - and how non-scientists, and non-biologist scientists sometimes misunderstand and misapply the the concepts involved in evolutionary theory. I don't see much of an agenda, other than the agenda of being properly understood, by those within the field itself.
"Most importantly I note that despite my invitation to do so, you find no other explanation for your views on subjective morality other than Natural Selection (NS) and its extension, memetics. Our shared views on the abuse of the scientific method rather mitigate against your views on the possible explanatory powers of memetics. Thus I assume that this was mere speculation on your part, unless of course you have some evidence to offer?"
Again - my knowledge in the area is limited... as yours obviously is as well. So, do not take my current lack of evidence to mean anything about the questions you pose - other than my lack of knowledge... and my scientific instinct to be conservative in my claims in the absence of a ready set of references on the matter. This is not a weakness, but is the way it should be approached, IMO.
"I am afraid that I cannot agree with you on the mechanics of natural selection. For your theory to be plausible society itself would have to be the agent on which mutation works, rather than the individuals who make it up."
You misrepresent what I said. I specifically noted that mutation works on individuals and that since a society is a collection of individuals, natural selection's effect on society would be one step removed and thus muted. (but not absent)
"It seems to me that this akin to making a sociological or social Darwinist argument. On the individual level your denial that the mutations must be temporally close is rather puzzling to me, given that natural selection is at heart the mechanistic interaction of the genotype with the environment, and the latter is subject to change and usually random change at that."
I have little idea of what you're trying to say here. Sorry. ...but I'll take a stab at it.
You *seem* to be saying that mutations have to be across an entire population and have to be at the same time. I don't understand why you believe this would need be the case. For one thing, it is not at all necessary for all or most or even many of a population to have the same mutation. One individual could be sufficient. That individual, if the mutation is favorable for survival in the new environment, would have an increased chance of survival compared to others... and thus would be both more likely to survive and be more likely to have children with that trait that survive... each generation would therefore tend to have more and more individuals with that trait and those without the trait would be less successful and eventually become a minority. Perhaps with continued change to the environment, the new trait (the mutation) becomes so important that those without it die off in large numbers - essentially dooming the old trait to extinction. If those with the old trait are extinct, that small slowly growing population with the new trait becomes the only population... and the spread of the new trait is only limited by population growth.
This is actually not unlike a meme (as I understand it)... Consider... for the idea that, say, democracy is better than monarchy to spread across the world, it does not have to happen all at once (indeed, that is highly unlikely). It can easily (and it did) start with one country, and then people talk and move, books are written, the idea spreads... and the democracies, if they are a better system, will be more efficient and powerful, on average, and win the competition politically, economically, and militarily over many generations against the system of monarchy. For evolution of political systems to happen, it does not require that everyone wake up one day suddenly in a democracy. Heck, you can even have democracies disappear for a while (after the Ancient Greeks and the Roman Republic and before the U.S. and post-revolutionary France) and still come back to it. There is random chance involved - both with the mutation, and the success of each individual with or without that mutation. If the mutation is superior, it may take a few times for it to take hold on the population, but once it does it will become the dominant form.
I could come up with endless analogies... how about group of poker players (being the population)... one poker player (let's call him "the house") comes up with a new and improved strategy which turns his success rate from being identical to the other players to being 1% more likely to win a hand than the other players on average. Given enough hands (with small bets - for the probability to accrue - rather than be blown in one case of betting it all), and random chance, this player is likely to win all the money on the table... This sort of statistics is what keeps casinos in business and very wealthy - in a very predictable manner. They have a rather small advantage in any given hand or roll of the dice and they simply have countless numbers of hands and rolls of the dice for this advantage to build a fortune. Such as it is with a favorable mutation.
"To further clarify/answer your question I do not hold to the micro/macro view that you refer to, indeed just the contrary. I have posted in the past about speciation, an inherent part of NS I think you will agree, and the prima facie implicit implication for human society in terms of racism. We can go into it again if you like."
I don't remember the conversation - sorry. You do realize that having variation - including up to ethnic groups and races does not imply necessarily that speciation will happen, right? So long as the population can and does interbreed, speciation will be resisted. Indeed those differences can even lessen over time if the interbreeding rate is high enough... as you can probably guess.