ambiguity comes in when it comes time to say whether we are doneevaluating.pi / e could be converted to some decimal approximation or perhapssome infinite series, but do not we lose more information than we gain? pi / e looks done.5/10, on the other hand, is a member of an equivalence class offractions that all mean the same thing but with 1/2 the canonicallowest terms" delegate of this class