If the bank had a bad loan underwriter, it could dismiss the person and proceed to clean up the mess. As many banking organizations have grown into much larger and far more complex institutions, that personal feel often gets lost.
Their managements need the more sophisticated and systematic processes that risk modeling can provide, but they also need to ensure that an incorrect or weak model does not bring down the house. I would offer that success in this area often requires grey hair and keen intuition as well as highly developed analytical skills.