How has acceptance of the classical

How has acceptance of the classical diffusion model limited the originality
and appropriateness of the work of diffusion researchers?
We think this chapter is important because anyone who wishes to
learn about and understand diffusion research ought to know the history
of how it attained its present status. I have been involved in diffusion
research since 1954, and so much of the twenty-eight-year history
described here is one that I know personally. I consider myself a loyal
and sympathetic, but critical, participant in the history of diffusion
research. That viewpoint should be kept in mind when reading the
pages that follow.