Computer software runs much differently today than it did, say, five years ago. It is approaching the state of the art of ‘computer simulation’ - modeling real life situations - like, ‘customers’ waiting in line at the bank ..or ‘fighter pilots’ flying over enemy terrain. Instead of one program, doing all the work ..they are broken down into several programs that mimic people, places and things (objects) and how they interact to get a job done.
In a typical online business exchange, you have programs that simulate people acting as ‘buyers’ and ‘sellers’ who send messages (orders) to one another in a ‘virtual trading space’. When you’re on Amazon.com ..each web page acts as an ‘object’ presenting you with other ‘objects’ such as books, reviews or shopping carts. In addition, there are programs simulating order-takers and shippers. Each one does a small task such as ‘look up book’ or ‘compute delivery charge’ in order to produce the experience of ‘shopping on Amazon.com’
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