 For much of the interval between the original publication of Bell’s theorem and the experiments of Aspect and his collaborators, interest in Bell’s theorem was confined to a handful of physicists and philosophers. During that period, much of the discussions on the foundations of physics occurred in a mimeographed publication entitled Epistemological Letters. In the wake of the Aspect experiments (Aspect, Grangier, and Roger, 1982; Aspect, Dalibard, and Roger 1982), there was considerable philosophical discussion of the implications of Bell’s theorem; see Cushing and McMullin, eds. (1989), for a snapshot of the philosophical discussions of the time. Interest was also stimulated by the publication of a collection of Bell’s papers on the foundations of quantum mechanics (Bell 1987b). The rise of quantum information theory, which, among other things, explores the ways in which quantum entanglement can be used to perform tasks that would not be feasible classically, also contributed to raising awareness of the significance of Bell’s theorem, which throws into sharp relief the difference between quantum entanglement-based correlations and classical correlations. The year 2014 was the 50th anniversary of the original publication of Bell’s theorem, and was marked by a special issue of Journal of Physics A (47, number 42, 24 October 2014), a collection of essays (Bell and Gao, eds., 2016), and a large conference comprising over 400 attendees (see Bertlmann and Zeilinger, eds., 2017). The interested reader is urged to consult these collections for an overview of current discussions on topics surrounding Bell’s theorem.