It is argued that the nature of probability is essentially informationalrather than physical and that quantum mechanical predictions should be viewedas logical inferences made on the basis of the information content of a givenexperimental situation. By implementing such a viewpoint, it is possible tomaintain a sharp distinction between the physical and statistical aspects ofquantum mechanics. The idea is applied to the double-beam interferenceexperiment, reproducing the results of the standard formulation of quantummechanics in a manner that renders the notion of wave-particle dualitysuperfluous.
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