N. Weidman (1994) claimed that "Karl Lashley and Clark Hull had a long and unresolved controversy about the structure and function of the brain, its relationship to the mind, and the use of machine metaphors to explain intelligence" (p. 162). The record contained in published articles and unpublished correspondence indicates otherwise. The clash was explicitly about continuity versus noncontinuity in discrimination learning, stimulus generalization, and the development of quantitative and mathematical psychological theory and its relation to neurophysiological data. Weidman also contended that the subtext of the debate was whether heredity or environment was more important in determining intelligence and behavior. This is doubtful. It is more probable that the debate stemmed from Lashley's career-long opposition to connectionism.