TheStatutoryApe said:
Subjective. Who says that I will be happier to live longer?
Most people. Maybe you misunderstand. It doesn't matter if the goal is subjective or objective, only that it be [nearly]
universal. Take a poll of people. Do you think, perahps, 8 of 10 people would agree that lifespan is a good litmus test for development? Then that's the goal. It doesn't matter if you can derive the goal logically, only that you can derive the system of ethics required to achieve that goal logically.
That said, we can still discuss the goals themselves:
Perhaps I would be happier to live a shorter time span if my perceived quality of life will be greater by ignoring those things that will increase my longevity.
Most people would presume that lengthening lifespan does not include a decrease in quality. Quite the contrary, an increase in lifespan goes hand-in-hand with an increase in quality because it involves a reduction in things like accidental death and disease.
And what exactly constitutes freedom and comfort? To what degree am I willing to sacrifice my comfort for freedom and vice versa? Or to what degree am I willing to sacrifice longevity for freedom and comfort and vice versa?
That is quite a difficult consensus to find. But it is a secondary issue. As implied above, lifespan carries with it components of the other drivers of human behavior and is a dominant driver. This is Maslow's heirarchy:
http://en.wikipedia.org/wiki/Maslow's_hierarchy_of_needs
Harris hit the crux, in my opinion, with the word "values", as we each value different things to differing degrees and our ethical choices will be based upon what we value more or less.
Indeed, but why do people require values to be absolutely identical between people in order for a system of ethics to be "right"? It isn't the case with other aspects of evolution. If being taller presents a survival or sexual advantage, it doesn't mean that tall people will procreate and survive while short people won't, it just means that tall people will
tend to procreate and survive more often. So too with ethics. The "better" system of ethics isn't absolutely always preferred, it only
tends to be more preferred. We might call it "evolutionary pressure". Hemophelia? Very high evolutionary pressure against it. Desire to listen to Brittney Spears over Dvorak? Not much evolutionary pressure either way (unless that is connected to other issues, of course...).
Better is still subjective. Even the idea that humans need or ought to survive is based on a subjective loyalty to our species. There is no reason why humans ought to develop and become "better" or even last another hundred years.
If that's true, then we need to eliminate the concept altogether, because evolution has the goal of making species survive and thrive. Typically, people call that "better", but if you don't like the word or characterization, I'm not really sure what to call it. Maybe we just call it the driver of evolution. So we could say that the ethical system that evolution would push humans to follow would be the one that tends to make humans survive and thrive. I would say that is the definition of "better" but if you don't like the word, I'm not sure we really need it to have a productive discussion.