An old electronic surveillance system! These were built a long time ago to monitor communication between Highway Bandits. But it was hard to know who's a bandit and who's not. It's probably best to monitor everyone just to be safe. I wonder if it still works?
—the Virtual Sign Painter is Listening [Alice and Bob and the Third Party]
Alice and Bob and the Third Party is a level in the video game World of Goo. It is the seventh level of Chapter 4. The player must extend the Infected Goo structure to the green pipe, cover the floors with blades with Block Goos and then use the remaining Block Goo to catch Bright Green Goos. Appropriately, this level introduces the characters Alice and Bob.