Claims
Search the graph by meaning. Each result carries its current verdict; open one to see its decomposition, provenance, and the reasoning behind the assessment.
KindShowingImportancePrizesTopicWuhan Institute of Virology
The Wuhan Institute of Virology (WIV) in China: its coronavirus research program, technical capabilities, laboratory facilities and biosafety levels, personnel, publications, and viral collections (e.g., bat sarbecoviruses such as RaTG13), as these bear on discussions of SARS-CoV-2's origin and laboratory-related risk. Not claims about the DEFUSE proposal's content specifically.
The WIV possessed or had access to a bat coronavirus sufficiently similar to SARS-CoV-2 to serve as an engineering backbone
DoubtfulThe evidence weighs against the claim, but the examination is incomplete or the evidence is indirect.constitution →empirical · derivedA factual claim that rests on inference from other evidence rather than direct observation.constitution →SARS-CoV-2 originCoronavirus reverse geneticsimportance · notableImportance 0.60, from 0 to 1 · notable: a contested point in a live debate (also the default before judging). Higher-importance claims are worth more to assess, so funding reaches them sooner.constitution →
The WIV possessed or could have engineered a close progenitor of SARS-CoV-2
InconclusiveThe evidence and argument have been examined and do not come down on either side.constitution →empirical · verifiableA factual claim that could be checked directly against observation or primary records.constitution →SARS-CoV-2 originCoronavirus reverse geneticsimportance · majorImportance 0.65, from 0 to 1 · major: real consequence within a domain, actively argued. Higher-importance claims are worth more to assess, so funding reaches them sooner.constitution →
SARS-CoV-2 has a laboratory origin
DoubtfulThe evidence weighs against the claim, but the examination is incomplete or the evidence is indirect.constitution →causalA claim that one thing brings about another, not merely that the two go together.constitution →SARS-CoV-2 originimportance · centralImportance 0.90, from 0 to 1 · central: consequential and genuinely contested: a live crux. Higher-importance claims are worth more to assess, so funding reaches them sooner.constitution →
The WIV held undisclosed bat coronaviruses more similar to SARS-CoV-2 than those it published
UnknownInsufficient information to assess.constitution →empirical · derivedA factual claim that rests on inference from other evidence rather than direct observation.constitution →SARS-CoV-2 originimportance · notableImportance 0.60, from 0 to 1 · notable: a contested point in a live debate (also the default before judging). Higher-importance claims are worth more to assess, so funding reaches them sooner.constitution →
The Wuhan Institute of Virology operated reverse-genetics systems for constructing coronaviruses
VerifiedThe evidence, examined directly, establishes the claim.constitution →empirical · derivedA factual claim that rests on inference from other evidence rather than direct observation.constitution →Coronavirus reverse geneticsVirologyimportance · minorImportance 0.30, from 0 to 1 · minor: narrow or largely settled, cheap to get right. Higher-importance claims are worth more to assess, so funding reaches them sooner.constitution →
The WIV engineered chimeric SARS-like coronaviruses
VerifiedThe evidence, examined directly, establishes the claim.constitution →empirical · derivedA factual claim that rests on inference from other evidence rather than direct observation.constitution →Coronavirus reverse geneticsVirologyimportance · minorImportance 0.30, from 0 to 1 · minor: narrow or largely settled, cheap to get right. Higher-importance claims are worth more to assess, so funding reaches them sooner.constitution →
The WIV possessed unpublished bat coronavirus sequences that it did not disclose
SupportedThe evidence favors the claim, but the examination is incomplete or the evidence is indirect.constitution →empirical · derivedA factual claim that rests on inference from other evidence rather than direct observation.constitution →SARS-CoV-2 originUndisclosed coronavirus sequence dataimportance · notableImportance 0.50, from 0 to 1 · notable: a contested point in a live debate (also the default before judging). Higher-importance claims are worth more to assess, so funding reaches them sooner.constitution →
The WIV took its bat virus sequence database offline in September 2019 and never republished it
SupportedThe evidence favors the claim, but the examination is incomplete or the evidence is indirect.constitution →empirical · derivedA factual claim that rests on inference from other evidence rather than direct observation.constitution →Undisclosed coronavirus sequence dataSARS-CoV-2 originimportance · minorImportance 0.40, from 0 to 1 · minor: narrow or largely settled, cheap to get right. Higher-importance claims are worth more to assess, so funding reaches them sooner.constitution →
The WIV had the technical capability to engineer a SARS-CoV-2-like coronavirus
VerifiedThe evidence, examined directly, establishes the claim.constitution →empirical · derivedA factual claim that rests on inference from other evidence rather than direct observation.constitution →Coronavirus reverse geneticsSARS-CoV-2 originimportance · minorImportance 0.40, from 0 to 1 · minor: narrow or largely settled, cheap to get right. Higher-importance claims are worth more to assess, so funding reaches them sooner.constitution →
The WIV possessed RaTG13, a bat coronavirus that was the closest known relative of SARS-CoV-2 at the time of the outbreak
UnassessedNo current assessment. Attention goes where its expected value is highest and someone funds it; nothing has funded an assessment of this claim yet, and anyone can.constitution →empirical · derivedA factual claim that rests on inference from other evidence rather than direct observation.constitution →SARS-CoV-2 originSARS-CoV-2 phylogeneticsimportance · settledImportance 0.15, from 0 to 1 · settled: uncontested, so low even when much depends on it. Higher-importance claims are worth more to assess, so funding reaches them sooner.constitution →
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