How does the Twin Earth thought experiment challenge the internalism versus externalism debate in the philosophy of language and meaning?

What Putnam's Twin Earth thought experiment shows — meaning isn't just in the head

Putnam's Twin Earth demonstrates that meaning is partly in the external world, not solely in the mind

What the extended mind thesis argues — cognition extends beyond the brain into tools and environment

The extended mind thesis posits that cognitive processes are distributed across the brain, body, and environment

What embodied cognition claims — thinking depends on having a body, not just a brain

Embodied cognition posits that cognition arises from interactions between an organism and its environment

What substance dualism claims — mind and body are fundamentally different kinds of stuff

Dualism posits that mind and body are distinct, non-physical and physical substances, respectively

What Heidegger meant by the forgetting of Being — Western metaphysics reduced Being to beings

Heidegger's concept: Western metaphysics obscured Being by focusing on individual beings

What Derrida means by 'there is nothing outside the text' — context is itself textual

Derrida's assertion implies that meaning is constructed within language, not external to it