In plain English, the system was not just playing Pokémon. It was using the game as a live environment where the AI had to make decisions over time. It had to navigate, battle, remember where it was, recover from mistakes, and keep going. The researchers describe Continual Harness as a reset-free self-improving system where the agent alternates between acting and refining its own prompt, sub-agents, skills, and memory during the same continuous run.