The generalized version of this proposition is that secular stagnation – the persistent underuse of potential resources – is the fate of all economies that rely on private investment to fill the gap between income and consumption. As capital becomes more abundant, the expected return on new investment, allowing for risk, falls toward zero.
将这一观点推而广之，长期停滞——即潜在资源的持久的使用不足——是一切依赖私人投资填补收入和消费之间的空白的经济的必然命运。随着资本的日益过剩，新投资的预期回报（考虑风险因素后）下降至零。