The most-watched economic statistics, such as gross domestic product (GDP), do not measure resource depletion; they are essentially measures of cash flow rather than balance sheets of assets and liabilities.

• 最受瞩目的经济统计数据，例如国内生产毛额（GDP），并未囊括对资源消耗的计算；基本上，它衡量的是资金流量而非资产和债务的平衡。