@unpublished{cogprints2440,
           month = {August},
           title = {JohnnyVon: Self-Replicating Automata in Continuous Two-Dimensional Space},
          author = {Arnold Smith and Peter Turney and Robert Ewaschuk},
            year = {2002},
        keywords = {self-replication, mobile automata, virtual physics, continuous space automata},
             url = {http://cogprints.org/2440/},
        abstract = {JohnnyVon is an implementation of self-replicating automata in continuous two-dimensional space. Two types of particles drift about in a virtual liquid. The particles are automata with discrete internal states but continuous external relationships. Their internal states are governed by finite state machines but their external relationships are governed by a simulated physics that includes brownian motion, viscosity, and spring-like attractive and repulsive forces. The particles can be assembled into patterns that can encode arbitrary strings of bits. We demonstrate that, if an arbitrary ?seed? pattern is put in a ?soup? of separate individual particles, the pattern will replicate by assembling the individual particles into copies of itself. We also show that, given sufficient time, a soup of separate individual particles will eventually spontaneously form self-replicating patterns. We discuss the implications of JohnnyVon for research in nanotechnology, theoretical biology, and artificial life.}
}

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