Consider a general $($simplified$)$ business scenario where a product sales company uses a collection of regional warehouses to store finished products until purchased by customers all over the world. They use data processing systems to manage product inventory, orders, shipments, and financial aspects of sales. Presuming that this company is fairly mature in its use of information technology, discuss the kinds of things you would expect to see in this company at each layer of the authors' three$-$era model. In particular, explore how systems thinking at the higher strategic level might impact systems developed or used at the two lower levels. Speculate about what this company is trying to optimize at the whole$-$system level.