6.1Adversarial Quality Through Separation of Concerns

The Critic-Actor pattern separates test generation from test review. One agent (the Actor) generates tests. Another agent (the Critic) reviews and challenges them. This is inspired by adversarial training in machine learning and Generative Adversarial Networks (GANs).

The key insight: a single agent generating and evaluating its own output has a conflict of interest. It tends to approve what it created. Separating these roles produces measurably higher-quality tests.