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The Post-World-War II-period |


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After World War II the importance of propaganda still increased, on the commercial level as well as on a political level, in the era of the Cold War. The propaganda institutions of the different countries wanted their people to think the right way, which meant, the national way. In the USA the McCarthy-era started, a totalitarian system in struggle against communism. McCarthy even managed to publicly burn critical books that were written about him; and every unbeloved artist was said to be a communist, an out-law. Cold War brought the era of spies with it, which was the perfect tool of disinformation. But the topic as a movie-genre seems still popular today, as the unchanged success of James Bond-movies show. A huge net of propaganda was built up for threatening with the nuclear bomb: pretending that the enemy was even more dangerous than the effect of such a bomb. And later, after the fall of the Iron Curtain, disinformation found other fields of work, like the wars of the 1990s showed us.

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Expert system
Expert systems are advanced computer programs that mimic the knowledge and reasoning capabilities of an expert in a particular discipline. Their creators strive to clone the expertise of one or several human specialists to develop a tool that can be used by the layman to solve difficult or ambiguous problems. Expert systems differ from conventional computer programs as they combine facts with rules that state relations between the facts to achieve a crude form of reasoning analogous to artificial intelligence. The three main elements of expert systems are: (1) an interface which allows interaction between the system and the user, (2) a database (also called the knowledge base) which consists of axioms and rules, and (3) the inference engine, a computer program that executes the inference-making process. The disadvantage of rule-based expert systems is that they cannot handle unanticipated events, as every condition that may be encountered must be described by a rule. They also remain limited to narrow problem domains such as troubleshooting malfunctioning equipment or medical image interpretation, but still have the advantage of being much lower in costs compared with paying an expert or a team of specialists.
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