<1>
In correctly noting that the *social* change of paradigms often involves a diffusion rather than a clear shift < 1 - 7 >, Henkel obscures another aspect of paradigm shift, the *conceptual*. Whereas the social change of paradigms involves the degree to which real scientists change their way of thinking, the conceptual change of paradigms involves change in premises. In ordinary science, there is a consensus, whether implicit or explicit, as to the fundamental premises from which reasoning is generated. We might usefully distinguish between two levels of practitioners, those who work from premises of which they are unaware and those who have reflectively explicated those premises. Even the latter are not yet engaged in any paradigm shift, since they are not changing the framework, only articulating its structure.

<2>
A paradigm shift occurs when new premises are created that neither completely fall under the current operating ones nor are completely implicit in them. There is therefore a true shift, because there is a logical or conceptual discontinuity.

Commentator
Gary Schouborg, Ph.D., Philosophical Psychology, is a partner of Performance Consulting, which facilitates planning, meetings, and teamwork efforts of both profit and not-for-profit organizations. He has published in philosophy, religious studies, poetry, and business. Walnut Creek, CA.

<Email: garyscho@worldnet.att.net>