rdfs:comment
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An expectation is a predictive belief held on purely logical grounds, i.e. not based on direct external evidence, like an observation or a statement by another agent. It is also often characterized as a "belief about the future", but this isn't very helpful since one may also hold expectations about the (yet unknown) past. The theory of evolution is for instance a fertile ground for predictions about the existence of past species, and therefore at the same a predictor of future observations.
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Is not only not an observation by itself, but also the thing being expected cannot be an observation in any sense
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