“The 21st century is the century of knowledge, and precarity will increasingly stem from the ability, or lack of ability, to master it”. Interview with Jérémy Lachal • Co-founder and CEO of Libraries Without Borders Jérémy Lachal analyses, for the Bulletin des bibliothèques de France and through the experiences of his NGO, the evolution of precarious situations and the factors aggravating them, notably the deprivation of access to knowledge and information.