Science of Survival (1951): In the year following the release of DMSMH, Ron gathered a tremendous amount of information on the subject of how cases responded to auditing and therefore the subject of human behavior. He codified this information in the Hubbard Chart of Human Evaluation. Science of Survival is organized around this valuable chart with individual chapters describing each of the chart's many columns in detail. Following on his first description of the life force, which he termed theta, Ron gives his first and most thorough description of the interactions between theta and the physical universe composed of matter, energy, space and time or, acronymically, MEST. Science of Survival enables one to predict the behavior of others accurately. By knowing only one or two characteristics of an individual, one can, by using the Chart of Evaluation, reliably predict how the person will respond in other areas of living as well as auditing. In Science of Survival is found the fundamentals that a decade and a half later were codified in the Grade Chart.