Given this reference text about the Flex Computer System, why was it created?

Context: The Flex Computer System was developed by Michael Foster and Ian Currie of Royal Signals and Radar Establishment in Malvern, England, during the late 1970s and 1980s. It used a tagged storage scheme to implement a capability architecture, and was designed for the safe and efficient implementation of strongly typed procedures.

Answer: It was designed for the safe and efficient implementation of strongly typed procedures.