To validate the proposal that GARD self-reproducing states (composomes) constitute dynamic attractors, we sought conformity with widely accepted attractor definitions . Notably, GARD kinetic attributes make this model capable of performing the necessary tests. In biological systems, a first characteristic of an attractor is being in a stable steady state, towards which a large number of initial states tend to ultimately converge upon . This definition is echoed in a study of a prebiotic catalytic network model , stating that an attractor is a recursive state whose composition remains within certain ranges, hardly depending on the initial compositions. A phase diagram of GARD compositional dynamics (Figure ) indeed shows that departure from diverse initial assembly compositions develops along different trajectories towards a narrow compositional neighborhood (both axes with value >0.9). At this neighborhood of the phase space, the current compositions belong to a composome by both definition criteria (see Methods).