And the lesson number one is....
Who on earth is BIS to talk about gullibility. Was it not the Basel Committee on Banking Supervision that BIS hosts that set up a system based on credit risk assessments and that appointed the credit rating agencies as the supreme risk measurers? If we normal citizens and investors are gullible of anything it has been of believing that the Basel bank regulations had taken care of the problem once and for all, and that the credit rating agencies knew what they were doing.
BIS also mentions “the inherent procyclicality of the financial system” to argue for tighter monetary conditions when credit soars…but not a word about how the risk rating and the consequent “massive re-rating of risk” can send cyclicality soaring to the moon.
No, if there is a first lesson to be learnt it is that central bankers and bank regulators are, no matter how knowledgeable and pompous they act, only humans prone to err, and so it behoves us not give them too much powers, which is what makes them truly scary and dangerous.
PS. A letter on this theme to FT back in 2004.
PS. Here is a current summary of why I know the risk weighted capital requirements for banks, is dangerous nonsense.