What was the 2009 crisis though? was that your run-of-the-mill recession (all business cycles have crests and valleys!) or was 2009 something different? Does a

What was the 2009 crisis though? was that your run-of-the-mill recession (all business cycles have crests and valleys!) or was 2009 something different? Does anyone operate under the assumption another recession (maybe even two or three) will occur in the next 10-20 years with 100% certainty and like, prepare for those rainy days?