Stephanie Coontz: Nothing predicts anything with truly inormous or enormous fects, buas life is complicated. So relatively speaking, these effects are really impressive, but i don't want to exaggerate too much there. But here's some evidence to suggest that the causal arrow is also from optimism, two outcomes. One example is that when you look at the relationship between optimism and health outcomes, we think that this is really optimists doing something differently.