u/Kitchen-Jicama8715

A common defence of socialism seems to be that people would still work productively even if the link between individual effort and private reward were weakened, because social benefit, solidarity, democratic control, or non-monetary motivation would matter more.

If that is right, should we also expect very high progressive taxes under capitalism to have only limited disincentive effects?

Put another way: if people would still work hard when surplus is socially owned, why would they not also work hard when a large share of income is taxed and redistributed?

It is well known that Nietzsche challenged Kantian thought (among many others), but did he present any substantial challenges to the moral philosophy of Hume, or was his work perhaps a more extreme version of Hume's ideas?

I assume Hume was an anti-realist with respect to morality. Is this true and would he be best classed as non-cognitivist or error-theorist?