  This paper tentatively conjectures a possible physical picture that may help
explain links between quantum field theories and string theories. A
correspondence might occur if the stringy parameters $\tau $ and $\sigma_i $
are interpreted as representing particular types of observer capabilities.
Observer limitations could be imposed by symmetries of relevant quantum
mechanical observer states. It is possible that this postulate may in future be
able to go a small way towards understanding a physical basis for some of the
dualities that have been found in string/field theory.
