The field of LIS is beset by recurrent debates as to its disciplinary status. For decades, the interdisciplinary nature of information science has been upheld without much proof from the ground. But if LIS is not an interdiscipline, is it then a meta-, a trans-a pluri-, a multi-or simply a discipline? The different proposals for qualifying the nature of LIS or for delineating its frontiers suggest that its fundamental nature remains unclear for its community. But is LIS alone in this dilemma and does it really matter? Does it stop the field from progressing?