Pentagon II introduces a decisive shift from field construction to field maintenance: the new ideas are not merely additional concepts but operational disciplines for keeping an expanded knowledge system alive, public and traversable.

RadicalEducation reframes pedagogy as the production of structural readers, people capable of seeing archives, bibliographies, diagrams, metadata and routes as parts of one epistemic architecture. ThermalJustice adds material accountability: no corpus is immaterial, because every archive consumes energy, occupies territory, generates heat and redistributes ecological burden. CatabolicPruning is perhaps the sharpest invention: it refuses the romance of total preservation and argues that mature fields must metabolise excess through ethical reduction, compression and selective forgetting. ExpansionRisk gives the system scalar discipline, insisting that growth can destroy the very legibility it seeks to increase if nucleus and periphery are not governed differently. DiagonalReading then provides the method of traversal: large fields cannot be mastered linearly, but must be crossed through oblique routes, partial entrances and conceptual diagonals. Together, these five ideas mark a mature phase: Socioplastics is no longer only asking how a field is built, indexed or made visible; it is asking how a field teaches itself, pays for its own materiality, digests its excess, limits its expansion and allows readers to move through it without collapse. That is the real conceptual advance of Pentagon II: it transforms abundance into care, and care into infrastructure.