Aphasia patients still solved logic tasks, challenging language-only theories of reasoning
lauriewired · x · 2026-07-30
The post argues that the human brain may not use language centers for formal reasoning the way LLMs do.
It cites a recent study of stroke patients with complete aphasia who still performed well on pure logic tasks, plus fMRI evidence that language-region activation in healthy adults did not scale with logical difficulty. The takeaway is that words may be too ambiguous for formal thought, and that human reasoning may be better understood as a modular, symbol-based system rather than a language-only process.
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