Let’s take this discussion online Anton Akhmerov, Xavier Bonet-Monroig, Valla Fatemi, Eliska Greplova, Evert van Nieuwenburg, Babak Seradjeh and Daniel Varjas Europhysics News, 51 3 (2020) 20-212 Published online: 30 June 2020 DOI: 10.1051/epn/2020303