This paper reports an exercise in adversarial collaboration. An adversarial collaboration is an investigation carried out jointly by two individuals or research groups who, having proposed conflicting hypotheses, seek to resolve the issue in dispute. The experiment reported was designed to...

We investigate conflicts between wildlife conservation and recreational use that can occur at open-access sites when visitors dislike crowding. A theoretical model is proposed which determines the spatial distributions of visitors to a beach, given their willingness to walk to avoid crowding and...