The Hidden Complexity of Information

Interaction information reveals that three or more variables share connections that simply cannot be explained by looking at any two of them in isolation. It captures the unique synergy that emerges only when the entire group interacts at once.

Usually, we measure relationships between two things at a time, but this concept goes deeper to uncover hidden patterns in complex systems. It can show if variables are working together to create new information or if they are actually obscuring each other. This is vital for understanding everything from brain activity to how genes coordinate to build life. By looking at these higher-order relationships, we see a much richer picture of how reality is wired.