Modern society depends on an extraordinary network of interconnected systems. Food travels through international agricultural and distribution networks; energy supports transportation, manufacturing, communication, and essential services; digital infrastructure coordinates financial transactions and industrial operations; and natural resources provide the material foundations for nearly every economic activity. These systems operate across geographic boundaries, connecting communities that may be thousands of miles apart. Their integration has expanded access to goods, knowledge, technology, and economic opportunities, but it has also created dependencies that are not always visible until something goes wrong.