by experimentation

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ThesaurusAntonymsRelated WordsSynonymsLegend: experimentation - in an experimental fashion; "this can be experimentally determined"
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Perhaps the most notable finding to emerge is the vital role played by experimentation," they conclude, noting that it plays a critical role in expanding a firm's knowledge by increasing its confidence in the choice of options and in encouraging the firm "to widen its breadth of vision, investigating potential choices outside its current frame of reference.