Scott Sumner points us to this interesting proof that the Keynesian economic model must be true. For the Financial Times is crowing about the fact that when government spending rises then so does GDP.

A business model in essence is a description of the results the business wants to achieve, and how the business intends to achieve those results. Most business models are financial accounting models ...

As businesses develop, they look for ways to conduct business as efficiently as possible. One option that contributes to business efficiency in many instances is use of an industry standard model.