The movie-going public owes a great debt to Gene Siskel and Roger Ebert. The "thumbs up, thumbs down" system breaks down a complex opinion into a simple yes/no question, "did you like it or not?" Its effects can still be seen on Reddit and even in the comments section of this very article - now all we need is some digital implementation of The Wagging Finger of Shame. Google's on board with the thumb system of movie and TV reviews, and has lately implemented it on its search pages in the Knowledge Graph section.

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