关于生命的英语美文|英语美文-给生命定价

Like many awkward questions, this is one that has to be answered. Safety regulations save lives but also raise the cost of doing business, a cost we all pay through higher prices. Are they worth it? Our taxes pay for life-saving spending on road safety and fire fighting. Are they high enough, or too high?
　　So how much are we willing to spend to save a life? A traditional planner's approach used to be to measure the value of wages lost due to death or injury. That's dreadful: it confuses what I think my life is worth with what my boss thinks my life is worth.
　　So an alternative is to ask people how much they would pay for a safer car or kitchen cleaner. But such surveys do not always produce sensible results. Our answers depend on whether we're being offered a safer ?10 household cleaner and then asked if we want the more dangerous ?5 version, or whether we're offered the ?5 brand and then asked if we'll pay ?10 for the safer product. People often answer ”no” to both questions, contradicting themselves. These inconsistencies mean that we're either irrational or lying to pollsters, and perhaps both.
　　Economists therefore tend to prefer observing real choices. If you're willing to cross a busy street to pick up a ?20 note, the economist who put it there can infer something about your willingness to accept risk. More orthodox approaches look at career choices: if you're willing to be a lumberjack, part of that decision is to accept risk in exchange for financial reward.
　　Being a soldier is risky; so is being a drug-dealer or prostitute. The difficulty, evidently, is to disentangle the health risk and the financial reward from all the other motivations to choose a particular way of life. That isn't easy but economists try.
　　World Bank economist Paul Gertler and his colleagues reckoned that Mexican prostitutes valued their lives at about ,000 per year, based on willingness to take money not to use condoms. At five times their annual earn

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