# Literature verification notes

Verification date: 2026-08-14.

Core load-bearing sources freshly checked:
1. Mariani et al. (2024), Collective Dynamics Behind Success, Nature Communications 15:10701, DOI 10.1038/s41467-024-54612-4.
2. Denrell & Liu (2021), When Reinforcing Processes Generate an Outcome-Quality Dip, Organization Science 32(4):1079-1099, DOI 10.1287/orsc.2020.1414.
3. Goel et al. (2016), The Structural Virality of Online Diffusion, Management Science 62(1):180-196, DOI 10.1287/mnsc.2015.2158.
4. Salganik, Dodds & Watts (2006), Experimental Study of Inequality and Unpredictability in an Artificial Cultural Market, Science 311(5762):854-856, DOI 10.1126/science.1121066.
5. Lorenz-Spreen et al. (2019), Accelerating Dynamics of Collective Attention, Nature Communications 10:1759, DOI 10.1038/s41467-019-09311-w.
6. Rizoiu et al. (2017), Expecting to be HIP: Hawkes Intensity Processes for Social Media Popularity, WWW 2017, DOI 10.1145/3038912.3052650.
7. Azzopardi & Vinay (2008), Retrievability, CIKM 2008, DOI 10.1145/1458082.1458157.
8. Remaining references are inherited from and cross-checked against the canonical Series I and Series II source packages.

Boundary notes:
- EOID is the unifying framework introduced in this paper.
- The Layer Non-Determinacy Theorem is a structural theorem about environment-dependent transition kernels.
- The Necessary-Stage Bottleneck Bound follows directly from event-set inclusion.
- The canonical eight-layer chain is a standard ordering, not a claim that every object must follow one rigid path.
- EOID does not claim originality for retrievability, collective attention, social influence, structural virality, Hawkes processes, Bass diffusion, WOM effects, or outcome-quality dips.
- The contribution is cross-layer unification, bottleneck reasoning, entity-artifact coupling, and a shared state/transition vocabulary.