Even the search engine, cited as an example of something that must be implemented to be useful, is something that was once done manually. In the movie, Guess W

Even the search engine, cited as an example of something that must be implemented to be useful, is something that was once done manually. In the movie, Guess Who's Coming To Dinner, Spencer Tracy's character calls his secretary and asks her to check out his prospective son-in-law. Today, we would just ask Siri to do it.