As generative architectures increasingly ingest synthetic outputs to train subsequent iterations, the financial ecosystem faces a profound epistemic risk: the recursive degradation of predictive signal quality. When models are trained on the artifacts of their own probabilistic outputs, the resulting feedback loops amplify latent biases and truncate the distribution of tail-risk events, effectively sanitizing the market data that informs institutional decision-making. This homogenization of intelligence creates a dangerous illusion of consensus, where idiosyncratic market anomalies are smoothed into non-existence by algorithmic conformity. To navigate this environment, investors must move beyond standard backtesting, which is increasingly susceptible to these self-referential distortions. At RS Investment, we mitigate this systemic drift through continuous, scenario-based stress testing that isolates exogenous, non-synthetic data streams, ensuring our capital allocation strategies remain anchored in empirical reality rather than the increasingly circular logic of autonomous model outputs.