Living organisms as a whole of various subsystems around semi-independent organs, which has been made out of tissues, which in turn made out of specialized cell

Living organisms as a whole of various subsystems around semi-independent organs, which has been made out of tissues, which in turn made out of specialized cells, etc is the right model. Cells are agents communicating with messages over different channels (slow blood vessels, and fast neural pathways). There, at least according to theory of evolution, is no better way to structure a complex systems. And the cell machinery could be modeled as a pure-functional LISP (because code and data uses exactly same sequential structure). This, presumably, was the intuition behind MIT Scheme. Pattern matching on messages in Erlang along with the "become" universal server is beautiful way to express general agents and is close to that uniformity, but code cannot be a message. Procedures are enzimes, data structures are proteins, asynchronous messages-passing is the way to communicate, and there are protocols to follow. One cannot possibly design better than that.)