The Untold Experiment

Tris and Tobias's experiment was the first one with factions. Before them were a bunch of other experiments to try and fix the GDs (Genetically Damaged) without factions. But this was a lie. One hundred years before them was a failed experiment that resulted in an uprising. Two dauntless individuals started a rebellion and no one will ever forget it, even if they don't talk about it, they whisper about it in secret, and it will forever be the most successful failure in history.