It’s a classic parlor game: Which three people from history would you invite to dinner? Now, a new app brings the experience to your phone with help from an artificial intelligence chatbot, allowing users to have text conversations with robots meant to simulate the perspectives of notable people from history, from Babe Ruth to Adolf Hitler. The app, called Historical Figures, has begun to take off in the two weeks since it was released as a way to have conversations with any of 20,000 notable people from history. But this week, it sparked viral controversy online over its inclusion of...