You can learn about it here, but fundamentally, there is an assumption on the part of the Siksika that rather than attaining what we would call "self-actualization" over time one is, in fact, born with it and this would seem to inform many other aspects of the culture. Childrearing, for example, is very hands-off, which would make sense if you believed your child arrived basically okay and kind of awesome so why would you fuck with that?  Furthermore, their views on wealth suggest that the whole point of attaining wealth is that so you can give it away. The one considered the wealthiest is the one who has given the most away. Which ties into why one has difficulty finding poverty in this environment because the second someone is poor, the rest of the community chips and makes them whole (instead of questioning "well do they really *deserve* to be made whole?" because, again, arrived self-actualized).