“…Moreover, our own experience in disseminating knowledge as well as that of other colleagues elsewhere in the world regularly demonstrates that nonacademic teaching aids are very attractive means to talk about crystallography (and all sciences) to non-specialists. A lot of very interesting media have been developed in that sense, especially since 2014, International Year of Crystallography (https://www.iycr2014.org/learn/educational-materials), and include exhibitions, games, comics, workshops, crystal growing competitions and radio broadcasts (Orlov et al, 2006;Garcia-Ruiz et al, 2015;Hodeau & Guinebretiere, 2015;Graz ˇulis et al, 2015;Van Meervelt, 2017;Gratias & Ravy, 2018;Casas, 2020). Scientific studies (Murphy et al, 2004;Weinberg et al, 2019) and testimonials (Zheng et al, 2018) also show that the wider public and school/college students are generally very enthusiastic about the idea of meeting laboratory staff, researchers and engineers, to discuss their research or more general scientific subjects.…”