ABSTRACT
The economy is a complex web of interdependent elements, and understanding any part is a significant accomplishment. The price of tea in the USA is determined by many factors, including individual preferences (or tastes), labor costs, weather conditions, and the price of tea in China, among others. Preferences, labor costs, weather, etc., are in turn connected to other factors, including the price of coffee, which in turn can affect the price of tea. All the parts can be moving simultaneously, making it hard to see what is causing what.
