The most likely interpretation seems that these artifacts represent a single technique of shaping or adapting stone for multiple purposes, some unguessed (for instance, the function of the smallest pits) and that the objects could be used by single or multiple individuals over long periods of time, and for various purposes. Indeed, the apparent randomness of their distribution may indicate that they were left lying as modified natural resources, whether with benevolent intent or because they did not represent a sufficient investment of time and labor to justify transporting them ("opportunistic" tools). More simply, perhaps the users intended to return to the same area during the next year's mast-gathering period.