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It should take about 150 KCA cubes working together to assemble two subassemblies (0ne yellow, and one purple). It takes about 50 subassemblies to make up a cube. The research question remains: where do the subassemblies come from? Perhaps structural DNA-templating or other quasi-deterministic assembly of silsesquioxanes or other molecular building blocks. See also “Kinematic Self-Replicating Machines“ by Robert Freitas and Ralph Merkle Kinematic Cellular Auto
