Interaction of computers : some aspects of the implementation of a conversational language in a multi-processor environment.

A closer association between man and machine enables a programmer to produce a program more rapidly. Instant turnaround rather than daily turnaround for batch jobs either reduces the total elapsed time taken to produce a given program, as shown by Sackman, Erikson and Grant (1968), or allows the programmer to attempt larger programs as noted by Brown, Calderbank and Poole (1968)