I read somewhere that we are three meals away from civil chaos. We are a very fragile civilization. In the past (up to say the 18th century) the main that was

I read somewhere that we are three meals away from civil chaos. We are a very fragile civilization. In the past (up to say the 18th century) the main that was a contagious disease, or a very harsh winter. Other than that people were basically self-sustaining. Today the smallest glitch in electricity, gas, water, banking, ... means immediate chaos.