In a manner relating to or caused by artifacts; in a way that is artificial or results from human construction.
From 'artifactual' + '-ly' (manner adverb). The adverbial form allows precise scientific description of how something occurred through artifactual means.
Scientists use 'artifactually' to precisely describe contamination or experimental error—calling something artifactual rather than real is a crucial distinction that prevents false discoveries from entering the scientific record.
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