The article analyzes how the rapid opening and closing of restaurants in China transfers household savings into the supply chain, using Keynesian multiplier theory and a stock‑flow “reservoir” model to explain the macroeconomic role, limits, and redistribution effects of this industry dynamic.
The article applies a classic budget‑constraint model to China's 2025 hotel market, revealing how slowed income growth, cheaper travel alternatives, and lifestyle changes force consumers to downgrade or skip overnight stays, concentrating demand in low‑price segments and threatening mid‑range hotels.
The article analyzes Epoch AI's token‑based framework for estimating AI‑generated digital workers, critiques its static assumptions, and proposes a dynamic, multi‑factor model that incorporates compute supply, hardware constraints, inference efficiency, task reliability, and economic value to forecast a wide range of possible future digital‑worker counts.
Logarithms, a core mathematical tool, are widely used in economics to transform multiplicative and exponential relationships into additive linear forms, facilitating analysis of production functions, utility models, growth rates, and log‑log regression, thereby simplifying estimation and interpretation of complex economic phenomena.
This article models the daily profit of a pig farm by balancing feed and labor costs against decreasing market prices, derives the optimal selling day that maximizes profit, and conducts sensitivity and robustness analyses to assess how estimation errors and parameter changes affect the recommended timing.
