scheme - actors
[from evolution of lisp - mccarthy, steele]
[ also see warren teitelman's PHD - man computer symbiosis 1966 ]
Carl Hewitt's theory of actors as model of computation:
every object as computationally active entity capable of recieving and reacting to messages objects=actors, messages=actors actor can have many acquaintances - know about other actors and send them messages functional interactions modelled with use of continuations (see On Lisp p258+) actors and closures as same concept
see also: Lambda the ultimate declarative/imperative - steele, sussman 1976 Hewitt's PLASMA Qlisp - gabriel mccarthy = parallel control structures global queue of processes and means of continuation
McDermott? - possible worlds paradigm ???