> The only real scarcity would be of a long attention span. I get the author's drift, and broadly agree. But I don't think it's really a long attention span that would get in the way of (e.g.) a Mars colony, or interstellar travel; it's that people's views change from one generation to the next. My kids have been imbued with some of my attitudes, sure; but I've not had much of a hand in the raising of my grandchildre…
I think that's what Kevin Kelly means by attention in the essay.
He writes:
> It is much easier to build a rocket that will sail 500 years to the nearest star, then it is to ensure that the future generations of people born on board that 500-year rocket maintain the mission
So he doesn't mean we'll flake out and flit our attention to something else on a whim. He's saying if we drop a project due to changing beliefs, opinions, and goals, that's "not having a long attention span".
I don't love his use of the word "attention" to mean that, but I think it's pretty clear what he means by the word from the essay.