 It is important to be aware of the abstractness of this perspective so as to guard against various non sequiturs. For one thing, one could easily think that dynamic semantics or update semantics is committed at least in part to an internalist idea of semantics since the information states are “internal”—in the sense that they are wholly contained in the individual mind/brain. In other words, one might think that the information states of dynamic semantics are what Putnam (1975) calls “states in the sense of methodological solipsism”. See the entries on  scientific realism,  computational theory of mind,  externalism about mental content,  and  narrow mental content.  However, the general framework says nothing about what the states are. The state could very well include the environment in which the interpreter is embedded and thus contain an “external” component.