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Published online by Cambridge University Press: 25 April 2016
There are two major difficulties associated with theoretical studies of star formation. The first of these is that the dominant physical process or processes leading to star formation have not been identified. The second is that realistic calculations at an appropriate level of accuracy have been impossible to carry out. The result has been that only minor advances have been made on the early work of Jeans (1929) and Hoyle (1953). Much greater progress can be expected in the next few years both because observations of infra-red sources have given us much more information about the site of star formation, and because access to the current generation of very fast computers is becoming more common.