Why we prefer an evidence graph to one score
One number hides disagreement. A graph preserves which evidence supports each step.
Scores compress disagreement
A composite score can rank candidates while hiding whether evidence layers agree. Two genes with the same score may have entirely different support profiles.
Graphs preserve the argument
An evidence graph keeps each source, inference, and uncertainty connected but inspectable. Reviewers can see which link supports a proposed mechanism.
Ranking remains possible
A graph does not prevent prioritization. It makes the basis of a ranking explicit and allows alternate weighting without rebuilding the evidence record.