But the estimates of wealth accumulation in recent years in the rich world are biased upward too. Empirical studies by earth scientists have revealed all too often that the capacity of natural systems to absorb disturbances is not unlimited.
但对富国在近些年的财富积累的估算同样有失公允。地球科学家们的经验性研究不止一次地表明自然系统吸纳干扰物质的容量是有限的。