After refitting the pots, the analysis of the dynamics of spatial dispersion of sherds from a single pot made it possible to establish a link between artefacts and the mode of sedimentation of the deposits in which they laid (a particularly important question on this site). Thus, the initial hypothesis was that sherds from a single broken pot determined both a specific surface and an isochronic horizon. Once the postulate duly tested, the conclusion was that such a surface could be related with another also circumscribed by the presence of sherds but from a different pot, and so on. The basic principle of ceramostratigraphy lies on this particular spatial observation.