“…The story presented below has been reported on at several conferences and workshops in the past few years, e.g. "Current Themes in High Energy Physics and Cosmology" at the NBI (Copenhagen, Aug 2016) 2 , lectures at the Simons Center for Geometry and Physics (Stony Brook, Sept 2016), 3 , 4 , Northern California Symplectic Geometry Seminar / UC Berkeley String-Math Seminar (Berkeley, Nov 2016), Caltech colloquium (Pasadena, Jan 2017), "Hitchin systems in Mathematics and Physics", Perimeter Institute (Feb 2017) 5 , IGST-2017 in ENS (Paris, Jul 2017) 6 . I thank the organizers of those events for their hospitality and the participants for interesting questions and comments.…”