Though 2020 is widely perceived as "the worst year ever," it was only a snack. The real banquet of consequences will be served in 2021. The reason 2020 was only a snack is that systems didn't break down in 2020. The reason 2021 is the main course is that systems will break down, and once broken, they cannot be restored.
I made the chart below to explain how systems fail and why they cannot be restored.