45 certainty about Federal policy concern­ the University of Alabama cardiac in­ ing the support of training contribute tensive care monitoring system on "ob­ to these difficulties. The problems are solete 1800 computers." Another re­ too broad and too complex to address sponded most efficaciously pointing out here. They are difficult for both aca­ that it is too bad that people lose sight of demia and government, and warrant the fact that a system on which a pro­ the active concern of the entire research gram is developed will always be able community. to do the job; change is not indicated Dr. Robert Macey introduced to the until the system ceases to be appropri­ ate. conference the exciting world of model development describing an application In another vein, the question opens to the area of membrane transport. The up a wide range of problems that can be discussion of his paper exposed the prob­ summarized as problems in the diffusion lern the modeler has of gaining ac­ of computer-based technology. At this ceptance of his particular approach, but juncture biomedical computing joins all mainly it provided a taste of the intellec­ the rest of biomedicine. The problems of tual excitement that modeling generates diffusion of advances in health research, among both doers and observers.