affecting the whole class of objects which, for example, had yellowness as a quality.8 Thus, a similarity between two objects or states would indicate some ontological connection between them. But Rogerson notes that this theory of primitive mentality is based on conjectures postulated prior to actual anthropological fieldwork. He mentions several studies that show that ‘primitives’ are much more capable of empirical reasoning than had been recognized previously. Thus, the supposition is unlikely