In his work Semantography Bliss had not provided a systematic set of definitions for his symbols (there was a provisional vocabulary index instead [1] (1965, pp. 827–67)), so McNaughton's team might often interpret a certain symbol in a way that Bliss would later criticize as a "misinterpretation". For example, they might interpret a tomato as a vegetable —according to the English definition of tomato— even though the ideal Blissymbol of vegetable was restricted by Bliss to just vegetables growing underground.