Some previous blog posts on this topic, from a few years ago: "Who Killed Prolog?" by Maarten van Emden. https://vanemden.wordpress.com/2010/08/21/who-killed-p

Some previous blog posts on this topic, from a few years ago: "Who Killed Prolog?" by Maarten van Emden. https://vanemden.wordpress.com/2010/08/21/who-killed-prolog/ https://vanemden.wordpress.com/2010/08/21/who-killed-prolog/ Posits that the huge hype put into it by the Japanese Fifth Generation Computing Project, which it failed to live up to, essentially killed off interest in the language, which it never recovered from. "Why did Prolog lose steam?", a sort-of reply I wrote. http://www.kmjn.org/notes/prolog_lost_steam.html http://www.kmjn.org/notes/prolog_lost_steam.html Posits instead that much of the low-hanging declarative fruit has been picked off by other, more specialized languages, ranging from SQL to production-rule systems to even LINQ, so Prolog no longer is the default go-to declarative programming language.