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While one could argue a lot about the formula, the author Zeeshan-ul-hassan Usmani has made a good example of how to properly publish a working paper in this age: not just that he has the paper, he has an interactive demonstration, graphs, data, and a 30-second "executive" summary of the methodology for all of us with attention deficit disorders. He could have a comment section, but that's the way to go!
Apparently the monetary value of my life is $-500,000. I don't even know what that means.
Mike, the negative numbers below are just the differences between your worth in a country you picked and your worth in another country. This information is indeed not at all that interesting, and just confuses. The real number is on top.