"Just what is it that gives human life value?"
Just what is it that you are looking for? An ideal? A concept? A tangible object?
How do you define value? Is it in terms of opportunity cost?
A single human/slave is worth fifty baskets of oranges. ~1 kilo per basket.
And, to open up another can of worms, what is the definition of human life? When does 'human life' begin? When does it end?
Next is, can a human life be associated with a monetary value? If so, does it depreciate?
Ya, man. I depreciated $50 last year. There's only $45 of me left.
What happens when this value runs out? Do you kill yourself? Can somebody else kill you without reprisal?
How are you going to interpret the answers you get? By this, I mean: whose 'worldview' glasses are you looking through? Is there a wrong answer to this question? If not, how about a 'bad' answer? Is there going to be a 'ranking' of answers? If so, whose is better? Stalin's 'value of human life,' Hitler's 'value of human life,' Mao Zedong's 'value of human life,' or Mahatma Ghandi's 'value of human life?' And furthermore, why?
Despite all of what I said above, what is the result of assigning a value to someone. If you are valued more than they are, what does this mean in terms of the relationship between you and that person? Okay, let's reverse the positions. Now they are ranked more than you on this highly arbitrary scale. Can they abuse you and get away with it, simply because they are 'ranked higher than you?'
Just for reference, I am an American. I believe in The Constitution and The Bill of Rights. I also believe that They Should Not Be Infringed. Ever. For Any Reason. Especially In An Emergancy. I believe that all men are created equal in the sight of their Creator, and that none are created more equal than others. I believe that assigning a value to human life is a horrible mistake.
'Nough said.
-(e)EP