A visitor to a web site that sold things noticed that some of the session state was kept in cookies that were delivered to the browser along with the site’s pages that led the buyer thru purchasing stages. The site thus requests the browser to keep these ‘cookies’ which are small packets of information, and include them with requests for subsequent pages at the same site. This is the naïve form of the ‘stateless server’. He noticed that the price of the item was included in the cookie. He lowered the price in the cookie and then proceeded to buy the goods. The site completed the transaction at a lower price. Eventual confronted with the evidence the user said: “But I thought we were dickering over the price.”.