All lives don't have equal current value, but the do have equal eventual value - I'll explain that in a moment (please note: I mean financial/economic value as I believe the term "moral/intrinsic" value to be so vague and undefined as to be completely useless as a thought model or reasoning tool - I understand what Melinda means). This is empirically correct - a poor person in Africa is worth less than a rich America…
Melinda Gates wasn't talking about economic value. I find it difficult to believe that most HN'rs take her statement to mean economic value since, as most people have been pointing out, all lives don't have equivalent financial worth. The rest of your point, I think, is a very interesting way to look at the value of human life, but it is a crude way of evaluating the worth of humanity purely in the context of financi…
Many of us think its 'brave' and 'correct' to say "all lives are equal value" in the moral sense. Its a 'sexy' thought to have as it seems liberal and its simple, but it is ultimately wrong.
Our actions are what define us, so a person who performs good/selfless actions that benefit others should be defined as higher value than a selfish murderer/rapist.
If lives were equal value then taking the life of a child would be equally as bad as taking the life of an 80 year old - but most people do not think that way.
Your value (in the moral sense) should simply be a function how much good you provide to the world. This leads to the difficult issue where because we can in fact buy "good" (by buying anti-malaria nets for children for £5 a pop) you find that those born into wealth have a higher capacity to perform "good" and therefore, on average, have a higher moral value by this definition.