"Chain" better than "open-loop"?

From Greg Williams (920326-2)

I forgot to mention in my last post that Mittelstaedt, at one of the Macy
conferences ("Group Processes," not "Cybernetics") showed three alternative
behavioral organizations: his "chain" is like what some netters have been
calling "open-loop," his "loop" corresponds to our "closed-loop," and his
"mesh" I don't think we need to be concerned with, at least at this stage of
the discussion. So there is an early use in biology of a reasonable (I
think) substitute for "open-loop" which perhaps avoids some objections of