David Graeber

Money has always been a particular problem for revolutionaries and anti-capitalists. What will money look like 'after the revolution'? How will it function? Will it exist at all? It's hard to answer the question if you don't know what money actually is. Proposing to eliminate it entirely seems utopian and naive.

If you look at history, there seems to be a regular pattern: the country with the most powerful military also happens to be the one with the world trade currency. That gives them an enormous economic advantage, which causes goods to flow into their country.

The historical novelist has to consider what has actually happened, while the SF writer is dealing in possibilities, but they are both in the business of imagining a world unlike our own and yet connected to it.