Best-laid plans

blueprints

New regulatory architecture is emerging from the wreckage of the crisis, but it remains to be seen whether an impregnable fortress will be built - or just a castle in the air. It is not going to be easy to implement the architects' vision.

The details of the plan are still sketchy, but the outline is clear: new bodies on both sides of the Atlantic will be charged with anticipating systemic problems, informed by ambitious new databases. Beneath them: in Europe, the three existing sector committee