리치와 톰슨이 쓴 "The UNIX Time-Shaing System"논문을 읽어보다가, Perspective 부분에서 다음과 같은 부분을 발견하였습니다.
Three considerations which influenced the design of UNIX are
visible in retrospect.
First, since we are programmers, we naturally designed the
system to make it easy to write, test, and run programs. The
most important expression of our desire for programming
convenicence was that the system was arranged for interactive
use, even though the original version only supported only one
user. We beliebe that a properly-designed interactive system is