Most people have a “normalcy bias.” They assume that if economic growth has continued for a long time in the past, it necessarily will occur in the future. Yet, we all know that all dissipative structures somehow come to an end. Humans can come to an end in many ways: They can get hit by a car; they can catch an illness and succumb to it; they can die of old age; they can starve to death.
History tells us that economies nearly always collapse, usually over a period of years. Sometimes, population rises so high that the food production margin becomes tight; it becomes difficult to set aside enough food if the cycle of weather should turn for the worse. Thus, population drops when crops fail.
In the years leading up to collapse, it is common that the wages of ordinary citizens fall too low for them to be able to afford an adequate diet. In such a situation, epidemics can spread easily and kill many citizens. With so much poverty, it becomes impossible for governments to collect enough taxes to maintain services they have promised. Sometimes, nations lose at war because they cannot afford a suitable army. Very often, governmental debt becomes non-repayable.
The world economy today seems to be approaching some of the same bottlenecks that more local economies hit in the past.