In the February 2001 article, "The Componentization Era Is Here," I talked about the increasingly blurred line between equipment and controls, and an ushering in of a new school of thought about what building hvac systems do. Feedback from readers' letters in the May 2001 issue pointed out that much industry restructuring was necessary to move toward the componentization concepts. John Moyles, P.E. of Kling Lindquist in Philadelphia wrote: