ASSAYA
The evidence corpus rendered as structure rather than a list — first the shape of what has been studied, then the places the literature has corrected itself.
What has been studied
Every point is a facet — a modality, a delivery route, or a study design. Threads are studies: two facets are joined by however many papers carry both, so the heaviest thread here (Airborne / Non-Contact and Acoustic) is the corpus's centre of gravity, at 5,587 studies. All 22,858 studies contribute weight. None are drawn as points, because the corpus holds no study-to-study structure that would justify it.
Point size follows how many studies carry that facet; thread brightness follows how many carry both, on a curve so the long tail stays visible against the heaviest pairing. Threads only ever join different axes — two modalities co-occurring says little beyond multi-labelling, while modality against delivery or design is the research landscape itself. The corpus also defines a scale axis (molecular through experiential) that carries no assignments at all, so it is absent here rather than drawn dark.
Where the literature answered itself
563 of 22,858 studies are joined to another study in this corpus by a bibliographic relation — 317 links in total. These are not citations: the reference graph is not harvested. They are corrections — comments answering papers, errata, updates, and 11 retracted papers. It is a small slice of the corpus and the only study-to-study structure in it.
Thread colour is the correction type and point colour is the study's modality, except for a retracted paper, which is marked on the point itself — a retraction read only from its thread would vanish the moment you looked at the paper alone. Point size follows how many corrections a study is involved in. Browse the full corpus at Studies.