I wouldn't say Popper disproved Marxism, broadly speaking, but he (and many others) certainly did irreparable damage to the historical determinism that is part of of orthodox Marxist thought.
The first paragraph of your reply is the one where I sense historical determinism. Wouldn't you say human interactions form too complex a system for us to be able to predict a "final outcome"? Conflict is a permanent feature of human societies, it existed when we were communal hunter-gatherers and it exists in our complex capitalist world. Do you think it can be permanently resolved?
Conflict, in the sense that people disagree and have different concerns? Certainly. What I see an end to is
class conflict, that struggle to make a secure life for oneself where it would not exist otherwise. Class struggle is when a worker tries to get that promotion or that raise, it is when a student invests tens of thousands of dollars in an education on the gamble that he can get a good job afterwards, and create a better life for his children than he had for himself. It is every effort by every underprivileged person to try and obtain for themselves some of the wealth that is hoarded by the wealthy few at the top. That sort of struggle is not something that is necessary, it is something imposed upon us by the puppet-wranglers in boardrooms and managerial offices around the world. Sill talked about motivation earlier: what is motivation in our society? It is compulsion to work for the benefit of
other people, in the hope that they might give us some of the wealth we helped create, out of the kindness of their hearts. I don't see that as productive or natural, it is forced, imposed upon us for their benefit. We can do away with that. It is the stuff of imperialism, the stuff of wars, the stuff of poverty and misery and chauvinism and all the dividers of mankind.
The conflict you speak of is personal conflict. I live in the valley, another man lives on a hill, he lets his fields wash into mine by not properly plowing it so that it won't erode. Thus we have a conflict. That's not a class conflict, it's a personal one, it's independent of any political system.
Is it unthinkable that say, the people of a region/province sitting on mineral wealth or even a water source that supplies other regions would try to "seize" said resources, in the sense of using them to improve their power relation regarding their neighbors?
Unthinkable? No. But unsustainable? Yes. I should think that such a thing as holding the world hostage would not be thought of very highly by the rest of the world. I should also think that in a communist society (by which I do mean communist, not the struggle-ridden path to get there), such an effort would be thought of as unnecessary by those citizens, because for all they give to the world, they get back in return (or the other way around; whatever, the point is the same). It's a symbiosis that shouldn't be ignored; when you think about it, it's really kind of the realization of Smith's comparative advantage.
But let's say that these people don't care about that. They gamble that they can last longer without the rest of the world than the rest of the world can without their "unobtainium." Is force at that point acceptable? I think so, if it were dire enough. Not because some place refuses to trade its particular brand of wheat with us, but if it were a serious problem of supply, then yes, I would support force to end the situation.
Even in a communist society some people would be better off than others, even if all have their material needs met.
I don't see how that could be the case. People get what the need from society, society gets what it needs from them. I mean, I could see how some people might not be
satisfied with having a certain amount of something, but if there's only so much to go around, and it's distributed equitably, then I could hardly care about their problem.
So I think it could happen that a group could be tempted to exploit resources at their hand in order to better their relative standing. I'm not saying such thing would necessarily happen, but I find it hard to argue it could never happen. I can imagine many scenarios in which a classless, "post-property" society would again develop and enforce the concept of property. I don't think History is marching on any direction.
Well if such a thing did happen, I would say it is a sign that communism isn't fully achieved yet. It's supposed to be defined by an absence of such things. I see communism as being the end result of class conflict; if by some great failure, socialism fails to achieve that result, then the dialectic will continue through other future systems until humanity does achieve equality. It is like the lowest geographical point, and society is water running down the hillside: it is going to keep trying indefatigably until it gets there.
I honestly don't have an opinion on whether communal systems are more stable than propertarian ones. I can see your point, but I can see points the other way as well (communal systems tend to die out in contact with non-communal systems). At any rate, the position I find hard to defend is that once a global communal society is established it can't ever "slip back" into a propertarian system.
I see a communal "system" as being much further down the road than Day:1 of the revolution. It's one of the big reasons I dislike the communes that spring up in places like Occupy or Haight-Ashbury (but not the rural communes like Mineral or Twin Oaks, those places are pretty cool); I think it's too far down the road to be something to be worried about right now. Social collectivism on that level is fairly abstract, I think it requires a greater tendency to think and feel in that capacity, and thus is naturally exclusionary towards most people in our society. Rather, I prefer the first route to be one that is already far more collectivized than most people realize: business. My vision of industrial democracy is one by which each company is effectively incorporated upon creation, with the sole stock owners being the workers (and thus also making them the "owners"), and stocks being split evenly between them. Most corporations are already structured on a democratic, committee-driven decision-making system, the problem is that it only includes management, it doesn't go to the factory floor. Extend it there, give all workers equal ownership, and that's basically socialism. The social stuff: health care, banking, electricity, education, all that's really secondary. Certainly not unimportant, but there can only be one "most important" thing. All else will flow from industrial democracy. It's both the most natural and most effective starting point for the eventual collectivization of society.