p47.
Actually, there is plenty of food for thought about where exactly to draw the line between things that are self-replicating and things that aren’t. Financial capital is to some extent, except that it depends on material assets and markets that aren’t. Food (you could argue, but not very convincingly) is—at second-hand—because the more people there are, the more labour becomes available to produce food. But let’s keep it simple. There is more than enough complication to come.