What parts of MMA have evolved? Boxing? Wrestling? What new moves do they have in BJJ? Maybe the training? What do they do now that no one knew back then? Surely human evolution hasn't changed a whole lot in 10 years has it? So when I hear people say some guy like BJ, when he was at the top of his game, could possibly be a top 10 lightweight today. What has changed that the Lightweight champ back then "might" be a top 10 guy now in this day and age.