> Also the assumptions about Unix are wrong; Unix - in it's most incarnations … Perhaps the author has chosen to ignore "most incarnations" and instead select

> Also the assumptions about Unix are wrong; Unix - in it's most incarnations … Perhaps the author has chosen to ignore "most incarnations" and instead select what fits his story: "In a traditional (pre-commercialisation) Unix system …" page 4 "When I write of “Unix” or “Smalltalk” in what follows, it will be important to distinguish their early, idealised conceptions from their later evolved forms …" page 6