+2a1 denotes a unique [Phase Transition](/wiki/Phase_Transition), a critical point where states dramatically shift. It often signifies the emergence of new [System Properties](/wiki/System_Properties), fundamentally altering observed behavior.
+## See also
+- [State Change](/wiki/State_Change)
+- [Emergent Behavior](/wiki/Emergent_Behavior)
+- [Critical Point](/wiki/Critical_Point)