Donald Wilson has died <http://theinquirer.net/default.aspx?article=35973>. He developed the Lexis Nexis legal text-search database system. However, he had trouble selling the idea to lawyers, who were not accustomed to that sort of thing. So what he did was offer the system free of charge to law students. By the time they graduated, they assumed that their employers would use this kind of thing as a matter of course. And so, naturally, eventually, they did.