Multi-Agent is a Trap. The Real AI Battleground is Harness Engineering.
You feed the same data to two different AI agents, and they give completely contradictory answers. The boss is furious, the client is confused, and you take the blame. The problem isn’t the model’s intelligence or the number of agents you deploy. It’s the Harness. Stop chasing multi-agent hype and start mastering the engineering scaffolding that actually controls AI output.