总的关键点是，在许多场合，认为岗位是稀缺的一般感知是非常危险的错误。
The overall key point is that the common intuition that jobs are scarce is dangerously wrong in many contexts.
然而，它们也不应当被一般化的定义，从而使任何一个能力中的资源成员要大于总人员的15%。
They should however not be so generically defined that the resource membership in any one competency would be greater than 15% of the population.
我们的食物从农田运送到市场平均要经过1,500至2,500英里路，但是这些路途产生的碳量一般仅占食物总的产碳量的4%。
Our food travels from 1, 500 to 2, 500 miles on average from farm to supermarket, but that journey typically accounts for just 4% of a food's carbon footprint.
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