82 CATEGORICAL SCHEME

For the conservative and the radical the categorical scheme is a priori. The former is intent on preservation; the latter on change. Both are concerned with the purity and simplicity of their respective schemes. On the other hand, the opportunist looks on schemes as ad hoc strategems, useable when the occasion demands. He/she is not concerned with maintaining a special framework since a special framework fŸr strategems is difficult to formalize.