Taking together place, time and manner, it would be possible to describe the encounter as comprising at least six modes: fragility, temporality, activity, integrity, causality and disparity. The author then explores what is meant by a rationality, and discusses the encounter between legal rationalities in Africa. The suggestion is that the law exists in Africa only in the tension between old and new, imposition and negotiation; the question at issue is the possibility of thinking ‘between-two-realities’, the ‘space-between’.