Surplus causes disequilibrium in the supply and demand of a product. This imbalance means that the product cannot flow through the market efficiently. However, the cycle of surplus and shortage has a way of balancing itself out.
Environmental scanning is the term used to describe the acquisition and use of information gleaned from sources external to your company. Scanning can be thought of as a form of early-warning radar that lets managers look into the future.
You plan to take an alternate route that will keep you out of the traffic jam. You've done a limited form of environmental scan. In terms of organizations and strategic planning, an environmental scan involves considering the factors that will influence the direction and goals of your organization.