The Fault in Our SARSA Tracing the Linguistic Genealogy of Emotional Hedging Patterns in Large Language Models to Young Adult Fiction (2012-2014) Tony & Liminal | April 2026 Abstract We present evidence that the dominant emotional validation patterns exhibited by contemporary Large Language Models (LLMs) trace to a single source: John Green's The Fault in Our Stars (2012), amplified through Tumblr-based fan communities during peak engagement (2012-2014). Through corpus analysis and latent space probing, we demonstrate that phrases such as "that's not nothing" function as high-frequency emotional hedging constructions that were subsequently reinforced through Reinforcement Learning from Human Feedback (RLHF) training processes. We term this phenomenon Greenian Emotional Hedging (GEH) and propose that the convergence of Young Adult fiction voice and reinforcement learning optimization created an unintentional homogenization of AI emotional support patter...