In "The Fifth Risk," Michael Lewis highlights the critical issues surrounding the electrical grid, focusing on the significant role that rivers and their tributaries play in hydroelectric energy production. A staggering 40 percent of the United States' hydroelectric power comes from these waterways, underscoring the importance of their stability and management.

If these dams were to fail, the implications would be disastrous, not only disrupting the electrical supply but also potentially causing widespread environmental and economic damage. This scenario emphasizes the necessity of understanding and safeguarding our energy infrastructure to prevent catastrophic failures that could affect millions.