During part one of the America's Got Talent finale Tuesday night, the top 11 acts of Season 17 took the stage one last time. While all of the acts were pretty stellar, one act had all the judges completely blown away. Metaphysic, a group that uses artificial intelligence technology to create hyper-real content, turned Simon Cowell into a world-class opera singer during the auditions, then brought Howie Mandel and Terry Crews into the mix during the Quarterfinals. The AGT judges wondered ...