{"artifact_id":"experiment_proposal-8c48ed63-08d9-40ff-b2d1-3a27b1c0a6ac","artifact_type":"experiment_proposal","title":"Experiment Proposal (crux): Multi-Biomarker Composite Index Surpassing Amyloid PET for Treatment Response Prediction — Composite index performance superiority over individual biomarkers not demonstra","quality_score":0.5,"is_latest":1,"version_number":4,"version_count":1,"debate_count":0,"supports_count":0,"contradicts_count":0,"neutral_count":0,"incoming_by_type":{"partial_answer_for":4,"discriminating_experiment":1,"bears_on_question":1},"total_incoming":6,"outgoing_by_type":{},"total_outgoing":0,"quality_trajectory":[{"score":0.5,"at":"2026-05-16T14:51:34.657673-07:00"},{"score":0.5,"at":"2026-05-16T08:03:22.955306-07:00"},{"score":0.5,"at":"2026-04-28T03:48:49.857966-07:00"}],"evidence_balance":0.0,"evidence_certainty":0.3,"total_evidence_items":6,"is_well_supported":false,"is_controversial":false,"is_foundational":false}