Version 2. 0 extends the original Second Life Vision paper with a significant theoretical addition: the Currency as Memory Medium hypothesis. Physical currency is proposed as a distributed memory medium that records the chemical change history of every human it has touched. Using conductive ink circuit printing technology (already commercially available), banknotes can become sensors that encode anonymized human state data at each transaction. The ubiquitous money infrastructure then becomes the largest behavioral database in human history — governed by the compatibility condition V=N/D (chemical change of significant magnitude requires resonance between Nₕolder and Ndestination). This paper further develops the Billionaire Paradox: a high-N individual using a billionaire financial infrastructure can generate value exceeding the billionaire own N-ceiling. Demonstrated through the author personal case study: using a credit instrument issued by a Japanese billionaire to fund AI dialogue systems, resulting in 565 DOI-registered theoretical works. The dual-layer framework (polygon transcendence + dual-layer architecture + ubiquitous money) remains the structural foundation, with the memory medium hypothesis as its deepest economic implication.
Yoshimitsu Katayama (2026) studied this question.