frontiers / frontier
The dependency graph over this frontier’s findings. Each edge is a typed link: one finding supporting, contradicting, or refining another. The graph is a reviewable view over accepted finding bundles, not a separate authority layer.
Finding graph
Graph index contract
The graph view makes dependency structure visible while keeping accepted finding bundles as the durable objects.
derived view
Supports, contradicts, refines, and depends-on links help users navigate a frontier's review structure.
record state
The graph points back to finding bundles. It should not replace source spans, provenance, or review history.
review path
Inferred or candidate links should route to review before they affect proof, trails, atlases, or constellations.
impact
A changed source or finding can expose affected proof, dependent findings, and review radius.
K2-18b DMS claims (1-sigma) are inconsistent with O2 abiotic false-positives framework; abiotic pathways would produce O2/O3, not DMS, yet both remain unconfirmed on K2-18b · inferred by reviewer
Ozone constraint on abiotic O2 production is a direct test of the photochemical pathway; detecting O3 at >0.1 ppm would be inconsistent with pure CO2 photolysis on N2-bearing worlds · inferred by reviewer
CH4 context detection is one strategy to rule out abiotic O2; detecting CH4 at high SNR constrains photochemical models that would predict O2 abiotic levels · inferred by reviewer
Methane biosignature detection requires contextual constraints on aerosols/clouds to confirm atmospheric composition; cloud degeneracies undermine abundance estimates needed for CH4 biosignature validation · inferred by reviewer
Ozone's role in constraining abiotic O2 relies on CH4 detection; if CH4 is present at high levels, O3 formation pathways differ and can rule out pure CO2 photolysis · inferred by reviewer
Sulfur biosignature optimization for hycean sub-Neptunes conflicts with current non-detection of DMS on K2-18b (a candidate hycean world), suggesting either hycean pathways are not favorable or DMS detection is too challenging · inferred by reviewer
M dwarf atmospheric evolution and water loss directly impact the false-positive risk framework; young M dwarf planets may exhibit O2/O3 from photochemistry unrelated to habitability · inferred by reviewer
Early anomalous biosignatures (sulfur-cyclers, methanogens) require broader wavelength coverage and sensitivity to constrain context; current JWST lack of UV prevents Proterozoic-analog classification · inferred by reviewer
High SNR uncertainties (10-100x) directly explain why chemical disequilibrium pairs require extreme sensitivity; current JWST retrieval errors prevent confident biosignature pair detection · inferred by reviewer
Hycean habitability (speculative) predicts strong sulfur biosignatures, but K2-18b's lack of DMS confirmation undermines the hycean-as-common-biosignature hypothesis; alternative explanations (abiotic pathways or non-habitable conditions) are equally viable · inferred by reviewer