Anne Storch is a Professor of African Linguistics at the University of Cologne. Her principal research has been on the various languages of Nigeria (including Jukun and Maaka), on the Atlantic language region, on Western Nilotic (Southern Sudan and Uganda), with a current interest in Digo (Kenya). Her work combines contributions on cultural and social contexts of languages, the semiotics of linguistic practices, epistemes and ontologies of colonial linguistics, as well as linguistic description. She has contributed to the analysis of registers and choices, language as social practice, ways of speaking and complex repertoires. She is interested in epistemic language, metalinguistics, noise and silence, as well as language use in complicated settings, such as tourism.R. M. W. Dixon is Adjunct Professor at Central Queensland University in Cairns. For forty years he reveled in on-the-spot fieldwork in Brazil, South Pacific, and especially in Australia. He has also put out two general books on Australian languages. Being equally intrigued with his native language, he has published several books about English grammar. Bob Dixon also enjoys looking for inductive generalisations which reveal the nature of human language, resulting the three-volume Basic Linguistic Theory (2010, 2012), among other works. His enterprise extends outwards from these foci, to kinship systems, the poetry of songs, the nature of linguistic evolution. He has been inspired by the linguistic acumen, insight, and integrity of Alexandra Aikhenvald, with whom he has had a long and prosperous partnership, as recounted in his academic autobiography I am a Linguist (Brill 2011). He has recently published The Essence of Linguistic Analysis (Brill 2021).