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To see the world as a web of information is a recent view. Humanity has contemplated the source and character of our knowledge since the dawn of time, but the present technologically oriented civilization demands a more concrete concept. Knowledge has been replaced by information. The information has to be carried by physical objects, and these are described by the theories of physics. Thus, we have to develop a theory for information coded in physical objects. Long ago, scientists developed formal descriptions of classical information transfer and its manipulation. Only recently, however, have we encountered the information capacity carried by quantum entities. The quantum theory of information, communication, and. | QUANTUM APPROACH TO INFORMATICS Motto Whatever is investigated by human reason commonly also contains falsehood and this derives partly from the weak judgement of our intellect and partly from the admixtures of pictures. Consequently many who remain unaware of the power of visualization will doubt such things that have been most truly demonstrated. This is the case especially because each one having a reputation as a wise man teaches his own version of the creed. In addition many truths that are taken to be demonstrated also encompass something false something which has not been truly demonstrated but rather is claimed on the basis of some probable or contrived argument which is nevertheless taken to be a valid demonstration. Thomas of Aquinas 1224-1274 QUANTUM APPROACH TO INFORMATICS Stig Stenholm KTH Stockholm Sweden and HUT Espoo Finland Kalle-Antti Suominen University of Turku Finland vf W LEY- INTERSCIENCE A JOHN WILEY SONS INC. .
