Dr. Arthur S. Iberall (1918-2002) was a theoretical physicist whose research at the NASA Exobiology Program into the dynamics of mammalian physiological processes led to the development of homeokinetics, the physics of complex systems. He was chief physicist at Rand Development Corporation and General Technical Systems and a consultant to various government agencies. His applied work contributed to the development of the first space suit, the high-speed dental drill, breathing regulators, fiberglass cutters, and major home appliances. He taught courses at UCLA Crump Institute in complex systems. Dr. Iberall published over 200 papers and authored books including Foundations for Social and Biological Evolution (1993) and Toward A General Science Of Viable Systems (1972).