I'm not sure what philosophy you mean. What more do we need than the scientific method?
You are probably joking (Marx's
Poverty of Philosophy comes to mind), but in case you are not: as I said earlier in the thread, there is almost no place of scientific method in the modelling of the proposal itself. It should be evident, since you won't find any actual usage of scientific method in any part of the literature on the subject. There can be arguments from science, but the arguments themselves are not science.
This is not at all a flaw, it's just how it should work. It's not too different (with regards to it being philosophical) from how the scientific method itself is outside the scope of science. Our debate about what we want and why we want it comes
before the scientific endeavor. Science can only help us look for what we already wish to attain. Both methods and norms come into play here. Nothing is non-debatable, including what scarcity actually means. When you move just a little bit away from the established paradigm, you are already knee-deep in philosophical problems. Which is actually where you want to be, if you intend to shift it.
Take johnyj's rambling as an example. I agree that he stated his conclusion a bit superficially, and I'm sure there are as superficial responses to match that. But what he's hinting at is not fully immaterial. I think the question is at least a loosely defined societal model (and not a criticism of historical ones), so that we can poke holes in it to perfection.