Buffer size is critical in the case of things like the credit crunch that seized up the global economy back in 2008. Having room to maneuver makes it possible t

Buffer size is critical in the case of things like the credit crunch that seized up the global economy back in 2008. Having room to maneuver makes it possible to address long term problems. Although it can also be thoughtlessly filled in service of short term needs with moves that don't actually provide a long term benefit.