Plenty of bank-specific explanations have been brought forth that avoid the difficulties of general explanations. They capture mistakes within banks that an inside observer would recognise. As they address specifically what went wrong in these institutions they lead quite easily to recommendations on how banking should be different in the future.
The main problem for all specific explanations is that they apply only to a subset of institutions that have run into trouble. For every alleged evil there are scores of banks that have done the exact opposite and still become victims of the credit crunch.
There are five main groups of bank-specific issues that are blamed for the crisis: