Evidence of absence
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Evidence of absence is evidence that allows to conclude that a certain phenomenon is not present, that a certain assertion isn't true. It is often said that "absence of evidence is not evidence of absence". However, if evidence is expected, but not present, that is evidence of absence.
See also
Blog posts
- Absence of Evidence Is Evidence of Absence by Eliezer Yudkowsky
- Conservation of Expected Evidence by Eliezer Yudkowsky