In recent years a number of scholars have analyzed the management of BSE, also known as 'mad cow disease'. The BSE crisis is regarded by many as an example of the failure of officials and politicians to handle risk situations. Yet, BSE is also characterized by a unique trait, that is, the infectious agent that causes it. Thus far, no one has paid attention to the fact that BSE and other transmissible spongiform encephalopathy's (TSEs) are allegedly caused by a novel agent - a prion - distinct from all other known infectious agents such as bacteria and viruses. The prion hypothesis was...