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Three is a magic number for versions\ . The "second system effect" \(due to Fred Brooks\) refers to the fact that second versions are often over ambitious and try to fix everything that was wrong with the first version. Multics was the second system after CTSS, which was one of the\ first time-sharing systems. Corbato won the Turing Award in part for CTSS.
)/Type/Annot/Popup 393 0 R/AP<>>> endobj 391 0 obj<>/Type/XObject/BBox[0.0 0.0 20.0 18.0]/FormType 1>>stream HL=N1Xqki^CxBCq<β~IVH(|RΗ.=k7"\"UΑ]dD:8±uuq:E!fR6o#9rpZQX*rI5=%{7l>A`][]e1Dl:j:A$٫@ޘw)5TheThe name "Unix" makes funs\ of Multics by \(see "eunuchs" in the dictionary\).
)/Type/Annot/Popup 395 0 R/AP<>>> endobj 395 0 obj<> endobj 396 0 obj<The idea of using your own software \ remains a valued principle in systems work; sometimes called "eating your own dog food", which makes no sense to me as a metaphor \(assuming you're not a dog\).
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