Comment by arter45

Time matters.

Imagine the power grid fails in an entire city for 48 hours. How many apartments or shops have backup power for 48 hours? What about hospitals or cellphone towers or traffic lights?

How long before someone cannot make a 911 call or hits another car at night or dies in intensive care because the machines don’t work anymore? What about all the food in a refrigerator, or CCTV cameras, or POS payments or a thousand other things? And if sometimes physically fails, how long before a technician (who was himself relying on that power grid) is able to reach the place, carrying whatever spare part they have, and fix the thing?

Or, take a dam. I’m no dam expert, but how long does it take before a flood happens? And when water starts flooding the streets, how long before people can’t get out of their homes, cars are swept away, and so on? How long before standing water starts carrying diseases?