You who are reading this sentence are metastable systems. So, is the biosphere, and so is all of human society. A metastable system is one that remains stable so long as the inputs necessary to maintain its stability are available.
For humans this includes food (energy) and water. For the biosphere the key element is the energy input from the Sun. For human society, which is a subset of the biosphere, the Sun is also the key energy input. Much of the energy used by humans is stored in the form of wood, coal, natural gas and oil which all ultimately come from living organisms dependent on the Sun for energy.
Hydropower is also a product of the Sun which drives the water cycle on Earth and therefore allows hydroelectric dams to be filled. Wind and solar energy are, of course, products of the Sun as well. The energy harvested by humans gets expressed in manufacturing and transportation in machines. It gets expressed in human labor, but also in the thought, planning, and communications needed to make things happen.
What we are witnessing as a result of this pandemic is a widespread challenge to metastable systems upon which our societies depend. The most obvious are those related to hospitals and health care products. We often read in the news that hospitals are near “the breaking point” as if the hospital walls will burst when too many patients crowd into the building.
What this really means, of course, is that beyond certain levels of activity, the normal systems of a hospital will not function properly for want of people to provide services, for want of supplies needed to provide those services—tests for the COVID-19 virus come to mind—for want of space to examine all those seeking medical attention and for want of money to finance it all.
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