Realisms Interlinked is a sublime work. It reanimates theoretical philosophy with a distinctive synthesis of ideas and methods drawn from the common-sense metaphysics, epistemology, philosophy of mind, and philosophy of language of classical India (mainly via the Nyāya school) and twentieth-century analytic philosophy (mainly via Strawson). In pursuing this agenda, the book lights up a new possible future for the study of world and mind, rooted in a borderless history of philosophy that should hopefully be better known among coming generations of analytic philosophers. Partly for this reason, it provides a refreshing contrast to other recent metaphysical and meta-metaphysical atlases like Sider (2011), Chalmers (2012), Thomasson (2014), Hofweber (2016), and Bennett (2017). It deserves to be read alongside these works; while Chakrabarti doesn’t discuss them and they don’t discuss him, a conversation between the traditions would, I’ll suggest, prove illuminating. Before turning to a discussion of some key ideas in this wide-ranging book, let’s consider its overall shape. Although Chakrabarti is a realist, the primary goal of the book is to defend certain realism-links, which he first explored in his 1992 ‘I Touch What I Saw’ (which reappears as the first chapter). These links are neutral on the status of realism, serving instead to constrain one’s overall set of commitments, leading to consistent realism or anti-realism. Hence the book could have been given the clunkier title ‘(Anti-)Realisms Interlinked’. But while that alternative title would have better conveyed the primary goal, it would have failed to signpost the aims of many chapters, which are often friendlier to realism, and consistently opposed to subjective idealism. For besides defending metaphysical linking theses in chapters 7, 16, and 24, the book also supports key tenets of Naiyāyika and Strawsonian epistemology, and critically discusses non-realist classical Indian schools (especially Buddhism and Advaita Vedānta) and anti-realist British philosophers (especially Dummett). This current in the book includes chapters defending the outer-sense perceivability of properties (ch. 3) and the inner-sense perceivability of self and mental states (chs. 12-14), a chapter opposing dream-based arguments for idealism (ch. 8), chapters defending testimony as a basic source of knowledge (ch. 19) and non-inferential knowledge of other minds (ch. 17), a chapter containing an approving discussion of ‘Idealist Refutations of Idealism’ (ch. 6), and a chapter opposing Dummettian semantic claims from the case of our understanding of future-tense sentences (ch. 23). The book also features chapters friendly to Nyāya’s more surprising realist commitments, including realism about absences (ch. 25).
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