Microsoft's Cortana had a solid Week 12, correctly predicting 11 of 15 NFL games. It's now 116-60 (65.9%) on the season. Cortana is a Windows phone virtual assistant that's using a Bing Predicts algorithm to predict every NFL game this season. It started at the World Cup, where it correctly predicted 15 of 16 knockout stage games, including Germany's surprising win over Brazil in the semifinal.