Well, this is not yet written by me. :P
This article was from a post on my fellow PhD collaborator Hao Wu. This passage was written by Roy Levin and David D. Redell (Ninth SOSP Program Committee Co-chairmen), and first appeared in ACM SIGOPS Operating Systems Review, Vol. 17, No. 3 (July, 1983), pages 35-40.
For more information please turn to his blog. Don’t worry, you are welcomed. :P