Facebook's Moments app uses facial recognition technology to group photos based on the friends who are in them. Amid privacy concerns in Europe and Canada, the versions launched in those regions excluded the facial recognition feature.
Daniel Craig plays James Bond in the film Casino Royale. Dramatis, a computer program, can detect suspense from this scene and rates it even higher as the plot thickens.
MGM/United Artists/Sony/The Kobal Collection
By clicking "Like" and commenting on Facebook posts, users signal the social network's algorithm that they care about something. That in turn helps influence what they see later. Algorithms like that happen all over the web — and the programs can reflect human biases.