Psy 101 | Term 033: NCA (Nearest Common Ancestor)
In a tree, two branches always meet somewhere.
The Nearest Common Ancestor (NCA) is the deepest node that has both branches as descendants.
Psy uses NCA proofs in GUTA to merge state transitions from separate branches of the GUSR tree — cleanly and provably.
It’s how parallel proofs come back together.
No conflicts. Just consensus.