Conceptual Atomism and the Computational Theory of Mind

What is it to have a concept? What is it to make an inference? What is it to be rational? On the basis of recent developments in semantics, a number of authors have embraced answers to these questions that have radically counterintuitive consequences, for example:
• One can rationally accept self-contradictory propositions (e.g.
Smith is a composer and Smith is not a composer).• Psychological state...