“My curiosity turned to pleasure as I read on, since Fians’ writing is both ethnographically rich … and theoretically sound … . Thorough and easy to read, with material from real speakers and situations, Fians’ book would make an excellent text for courses dealing with sociolinguistics and multilingualism – and, of course, for those focused on constructed languages. It could also serve as a model for those conducting research in constructed-language settings and, more generally, for those working with international and dispersed communities.” (Christine Schreyer, Journal of Multilingual and Multicultural Development, July 31, 2022)