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<p>there, without registering as a student. While there, in 1938 he met <a href="page.php?w=Jerome_Lettvin">Jerome Lettvin</a>, a <a href="page.php?w=pre-medical">pre-medical</a> student, and the two became close friends. Russell was a visiting professor at the University of Chicago in the fall of 1938, and he directed Pitts to study with the logician <a href="page.php?w=Rudolf_Carnap">Rudolf Carnap</a>. Pitts met Carnap at Chicago by walking into his office during office hours, and presenting him with an annotated version of Carnap's recent book</p><p>
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