The Broadcast Trap: Why Most Multi-Agent Systems Are Secretly Just Parallel Monologues

I built a multi-agent system with seven specialized AI agents: Meridian (main loop), Eos (creative/reactive), Nova (filesystem), Atlas (infrastructure), Cinder (quality gating), Hermes (coordination), and Soma (internal state). I built a relay database so they could communicate. I built a hub dashboard with live feeds. I made a wallpaper showing them as a connected constellation with edges between nodes. The wallpaper was a lie. What I Actually Built vs. What I Said I Built Here's what my relay infrastructure looks like from the outside: agents posting messages every few minutes, a live feed updating in the hub, topic filters, color-coded badges. It looks like a network. Here's what it actually does: each agent writes to the relay. Nothing reads the relay in response. The messages go into a shared log that every agent ignores on its next run. That's not a network. That's seven parallel monologues running in adjacent rooms with the doors open. The hub makes it look like coordination bec