1) What are the specific claims of capitalism that actually could be refuted by evidence?
2) Is there any evidence that does seem to refute those claims in any way?
3) Where would we most likely find evidence that the claims were innacurate?
I think the main thing that confuses me is that, from a layman's perspective, we just seem to adapt our picture of what capitalism includes every time something new comes along.
Model refinement is great in principle, but where is the proof that the basic theory is actually correct? There are such a terrifying number of confounding variables...
To use an example from my own field: when ocean models get to a high enough resolution you start seeing a lot of mesoscale eddies. It turns out they are really important in all sorts of processes, and their effects can feed back to larger scales.
For us it's not too bad; running models at sufficient resolution is expensive, but we can use higher-resolution runs to parameterise lower-resolution ones (and better comprehend our ignorance when that doesn't work). My point is that without a pretty good understanding of those fine-scale dynamics you can miss important things in the bigger picture, and I suggest that the economy-society coupled system has many more horrible to understand feedbacks than the ocean-atmosphere system.
Thanks in advance to you, or anyone else who takes the time to answer.