We apply the Information-Theoretic Unification (ITU) framework (Terada 2026, DOI 10. 5281/zenodo. 20109210) to economics. Markets are reframed as collective Bayesian inference engines implementing the ITU axiom dS = d at the social scale. This is Tier 1 paper #8, opening the social-sciences axis of the ITU programme following the completed engineering rectangle (#1-#4) and medicine triangle (#5-#7). Pass-1 progress reaches 74 of 220 planned phases (33. 6%). Phase 71: ITU foundation. EMH (Fama 1970) is shown as the idealised case; reality shows fat-tailed returns (4x EMH prediction for >3% daily moves). Akerlof's lemons reproduces market collapse (1000 -> 1 seller) via Kᵢ mismatch. Kahneman-Tversky prospect theory with lambda = 2. 25 quantifies Kdecision asymmetry. Prediction markets (Polymarket Brier 0. 16, Kalshi 0. 20, Manifold 0. 19) beat polls (0. 25-0. 36) in 2024 US election. Phase 72: Bubbles and crises. Minsky 3-stage instability (hedge -> speculative -> Ponzi) is Kₘarket structural degradation; crash triggers when Ponzi exceeds 40%. Information cascades (BHW 1992) reduce collective wisdom below independent voting. Nine historical bubbles from Tulipmania (1637, -99%) to FTX (2022, -100%) span -58% to -100% drawdowns. LTCM (1998), Lehman (2008), FTX (2022), SVB (2023) illustrate distinct ITU breakdown modes. Phase 73: Inequality and AI labor displacement. Pareto wealth distributions emerge naturally from ITU steady state (top 1% 19%, top 10% 58% in our simulation). Piketty r > g produces unbounded Kcapital divergence without redistribution. AI labor exposure (Eloundou et al. 2023 OpenAI) inverts traditional risk: translators 76%, mathematicians 63%, programmers 60% exposed; plumbers 4%, nurses 5%. Weighted 26. 2% of 22. 5M jobs affected. UBI cost: 1000/month US UBI = 11. 1% of GDP (declining to 6% by 2050). Phase 74: 2026-2050 roadmap. Three GDP scenarios: bear (44T by 2050), base (60T), AGI-bull (113T = 4. 1x 2024). CBDC adoption from Bahamas 2020 to USA pilot ~2031. Sectoral evolution: AI/Data 3% -> 15% (+12pp), Health/Bio 10% -> 18% (+8pp), Manufacturing 16% -> 12% (-4pp). EU ETS carbon price EUR 70/t (2024) -> EUR 350/t (2050). Ten falsifiable predictions issued covering S markets, bubbles, inequality, AI labor effects, CBDCs, and carbon transition are all Kₘarket structural dynamics. Honest framing: this is a Pass-1 interpretive paper that reframes classical and contemporary economics (Akerlof, Fama, Kahneman-Tversky, Pareto, Piketty, Romer, Minsky, BHW 1992) in ITU language. Numerical results match established patterns; predictions overlap with industry consensus. This opens the social-sciences axis, completing 8 vertices of the ITU polytope: engineering rectangle (Quantum Computing 10. 5281/zenodo. 20139391 + Machine Consciousness 10. 5281/zenodo. 20150501 + Cryptography 10. 5281/zenodo. 20151059 + Semiconductors 10. 5281/zenodo. 20174036) + medicine triangle (Cancer 10. 5281/zenodo. 20174318 + Aging 10. 5281/zenodo. 20175663 + Psychiatry 10. 5281/zenodo. 20177427) + social sciences first vertex (Economics, this paper). Includes 4 theory documents, 4 Python numerical experiments, 4 figures, 4 JSON summaries. Total runtime ~25 seconds.
Munehiro Terada (Fri,) studied this question.