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|Description=It is unclear whether traditional indicators like textbooks, encyclopedias, conference proceedings, and journal articles (which may normally be taken as evidence in evaluating whether an instance of acceptance took place) can be used to determine if evaluation by the demarcation criteria took place, because scientists may presumably may not keep track of those theories that are not those that are not scientific unscientific and those that are scientific but are unaccepted. Despite this quandary, it appears likely that we may find solid indicators of conclusive assessments, while it seems more difficult tp to locate indicators of inconclusive assessments. In the most fortuitous cases of the former, there may be publications by professional societies providing the "scientific opinion" about a theory's status. For the scientificity and acceptance of Lavoisoir's chemistry, the experimental evidence led the Académie des Sciences to conclude that "if we doubt of a truth established by experiments so simple and palpable, there would be nothing certain in natural philosophy".[[CiteRef::Wisniak (2004)|p. 742]] For the case of inconclusive assessment, however, very detailed archival research alone would shed light on such cases, for most of them may never receive attention from the scientific community, thereby making it difficult to find evidence of their existence. In any case, these are important questions for observational scientonomists in historical investigations of the demarcation criteria.