The far-infrared background carries half of all galactic emission ever, and the account does not balance: persistent excess intensity and clustering resist standard bookkeeping (Lagache 2005; Bethermin 2017). Dust needs metals, metals need prior stellar generations, and a high-z far-IR excess demands chemical maturity on timescales hierarchical growth cannot meet.
The model's CFIRB is fixed by its assembly history: star formation waits on halos, dust waits on metals, and metals wait on generations of stars, a sequential clock that starts too late to supply early dusty populations. Excess far-infrared light is therefore a timing violation, not a modeling detail.
SCT moves the whole clock. Collision-seeded proto-structures ignite star formation at deposition (P22, P25), and the first stellar generations complete fast on the dense deposited reservoirs, the same accelerated chemistry that lays the universal metallicity floor (recid 125) and delivers oxygen-enriched galaxies at z above 14 (recid 113). Dust follows metals immediately in such populations, so the far-infrared glow begins gigayears earlier than the hierarchical clock permits, and the integrated background inherits both the excess intensity and the excess clustering, the latter tracing the deposited web's geometry (P34) rather than gravity's slower correlations.
The chemistry stays honest throughout: the cascade erased all prior nuclei above the QCD scale, so the dust is in-cycle product, made fast on dense deposits rather than inherited (P40, P42), the same no-smuggling bookkeeping carrying the metallicity-floor sector. The registered expectation for the closing budget is specific: as ALMA and JWST resolve the glow, the excess should localize into dusty sources at redshifts where the standard sequential clock forbids them, the background and the resolved populations converging on one early epoch. The seeding mechanics are in Paper 4, From Chaos To Collisothermal Cosmogenesis, with the unresolved-background companion at recid 156.
Keystone economy: P25 starts the stars, P34 clusters them, and the dust simply follows its metals on the earlier schedule.
The closing budget carries the kill: if ALMA and JWST resolve the CFIRB excess into low- and intermediate-redshift populations consistent with the standard star-formation history, with no early dusty component required, the moved clock is unnecessary. SCT separately requires the resolved early sources to show the accompanying chemical maturity; early dusty galaxies with primordial-poor dust yields, dust without the metals to make it, would break the in-cycle production account.