If Waffle House Is Closed, It’s Time To Panic | FiveThirtyEight

"But the Waffle House Index also stands for something less obvious. It is an indicator of how complex and long supply chains are — for food, for fuel, for power — and of what it takes to plan around infrastructure that can be fragile in unexpected ways."

http://fivethirtyeight.com/features/if-waffle-house-is-closed-its-time-to-panic/