In this view, Unix was designed to be one of the first computer viruses (see virus) -- but a virus spread to computers indirectly by people and market forces, rather than directly through disks and networks. Adherents of this `Unix virus' theory like to cite the fact that the well-known quotation "Unix is snake oil" was uttered by DEC president Kenneth Olsen shortly before DEC began actively promoting its own family of Unix workstations. (Olsen now claims to have been misquoted.)
[If there was ever such a conspiracy, it got thoroughly out of the plotters' control after 1990. AT&T sold its UNIX operation to Novell around the same time Linux and other free-UNIX distributions were beginning to make noise. --ESR]