How could real shocks be the key component of Business Cycle Theory if real shocks themselves are not cyclical?
Does a real shock (such as a weather/environmental event, public health crisis, war, port congestion due to supply chain shocks, etc.) have an impact the economy? The answer is "of course." But how do shocks, which occur randomly and themselves are non-cyclical, cause cyclicality?
I understand that one randomly occurring weather event will impact the economy, but what I have not wrapped by head around is how it can cause ongoing cycles. As an analogy, if a pothole damages my car as a one-off, unforeseen, and non-reoccurring event, then how could that pothole cause a future cyclical pattern of my car being repeatedly damaged?
Or, is the claim from Real Business Cycle Theory that business cycles are not cyclical (which I think would not make sense)?