The framework of active externalism, proposed by @1998clarkExtended, takes the physical mechanisms or “vehicles” underlying cognition include both neuronal structures and factors outside of the brain, such as instruments and artifacts in the environment.
@2023gallagherEmbodied refers to this formulation as the “first wave” of theories of extended cognition.
Externalist view of linguistic reference, after Putnam (1975) and Burge (1979): immediate environment is irrelevant, only histrical enviornment counts