If I have to choose between you and me - I like me better.
The difference between you and me is that you think to live and I live to think.
If I know what to spec, and I can measure it, and there are no unpredictable interdependencies between what you do and what I must do in response, then an economist would say that is sufficient information for a market to emerge between you and me.
I have always thought that underpopulated countries in Africa are vastly underpolluted.