以下の論文をcafeで一通り読み、帰ってきて部屋で再読。 Christian Thiel “‘Not Arbitrarily and Out of Craze for Novelty’: The Begriffsschrift 1879 and 1893”, in: M. Beaney and E. Reck, ed., Gottlob Frege, Critical Assessments of Leading Philos…