Our ancient reptilian brain does seem to have a purpose: to keep itself alive to reproduce. It works very hard to achieve that. That of course is not a universal purpose, but it is one we can actually point to.
I think if we take your definition for granted than no property is ever unimportant, which in turn means everything is important, which in turn kind of defies the very definition of "important" as we use it in a colloquial context.
To be clear, I agree on the stages of oxygen, as described, as important in turn. And I agree that it somewhat undermines colloquial usage, but I don't think it's that straightforward.I can vibe with this re-definition of important, I feel it may actually benefit our discussion hugely, precisely because it is not as anthropocentric.
One curiosity though: Is there anything that, depending on its concentration, is utterly unimportant? Because I honestly don't think so. Doesn't matter if it's temperature, gravity, rainfall, population sizes, doesn't anything become important under the correct circumstances, and aren't those circumstances mostly arbitrary?
Aren't all three "stages" of oxygen equally important - High concentration meaning certain death, medium being some kind of life-enabling equilibrium, the last meaning the complete absence of oxygen, again certain death? I think if we take your definition for granted than no property is ever unimportant, which in turn means everything is important, which in turn kind of defies the very definition of "important" as we use it in a colloquial context.
Maybe if we take a route of: "A property is important to the degree to which it effects other properties in its own or other systems".
In that case "important" would mean a similiar thing as to what "significant" means in science/statistics. I'm not sure this preserves the original meaning of the word important, but it seems like a good working definition. If you think about it, a property can theoretically affect many other properties, but in absolutely marginal ways. In that case surely we would not call that property important. So what counts is both the amount of other properties it affects and the degree to which it affects them.
I was going to throw in a new line of Why is life.
But then, you guys have all the answers to everything, but why thinking we are the center of universe?
We are an ant stack wrecking ourselves into havoc. The BIG question is still WHY?
We can be very philosophical about it or quite not give a damn, we are us, what is the else?
I'm still humming on this, not as great as you peeps, but I'm still humming, and I wonder why?
"FYI I am actually from Alpha Centauri."
I believe you Kyriakos, so what do see there? Anything to answer the question why?
I don't think Alpha Centauri has more answers than we do.