What a Node Is
A node is a locally stabilized pattern. In ART this means a point at which recursive interference achieves enough coherence to appear as a definite thing, event, or state. The emphasis is on stability through relation, not on tiny isolated building blocks existing in themselves.
The language can travel across scales because a node names the pattern of local resolution rather than one special kind of object.
Why Stability Requires Coherence
Nodes hold because their internal relations are sufficiently synchronized. ART describes this with terms such as recursive interference and phase locking. A stable phenomenon is maintained by coherence; it persists because the relations holding it together continue to resolve.
What Collapse Means
Collapse is ART's way of talking about resolution under interaction. Before resolution, a system can be described in terms of multiple possibilities. Under concrete relation, one possibility becomes actualized as the local outcome. ART treats that as a lawful consequence of participation within a coherent whole.
In that sense measurement is an interaction inside reality that helps determine what becomes locally definite.
From Physics to Experience
Nodes and collapse matter because ART wants one grammar capable of speaking about physical phenomena and lived experience together. Definite appearances, perceptions, events, and moments of awareness all depend on local resolution rather than on an endlessly undifferentiated field.
That does not erase the difference between physics and psychology. It explains why both can still be described as cases of stable pattern arising from deeper structure.