At 7:24 ?pm -0400 2014/05/31, Doug McIlroy wrote: >Does anybody >remember who published that deep new insight and/or where? Probably this: B.P. Miller, L. Fredriksen, So, B. "An Empirical Study of the Reliability of UNIX Utilities", Communications of the ACM 33, 12 (December 1990) -- Kevin Schoedel <schoedel at kw.igs.net> VA3TCS