You should know that absence of evidence actually is evidence (though not always very strong evidence) of absence: http://lesswrong.com/lw/ih/absence_of_eviden

You should know that absence of evidence actually is evidence (though not always very strong evidence) of absence: http://lesswrong.com/lw/ih/absence_of_evidence_is_evidence_of_absence/ http://lesswrong.com/lw/ih/absence_of_evidence_is_evidence_o...