Socialist relations cannot incubate within capitalism as capitalism did within feudalism.

Evidence

In the former case, capitalist relations of production can develop within the feudal State, until at a certain point in time the “carapace” cracks. In the latter case, however, this is not so. It is quite impossible for socialist relations of production to develop “within” capitalism. — Antonio Gramsci, Selections from the Prison Notebooks, 382

Categorization

• DEFINE: Clarifies passive revolution’s core asymmetry: the bourgeoisie could grow to maturity inside a feudal state, but the proletariat has no equivalent host structure.