My point is more theoretic that an actual reflection on what will actually happen, because I'm not better than the next person at predictions. Simply put: just because a species needs to change in order to adapt, doesn't mean they do. Geologic strata are littered with species that no longer exists.
As for culture, it is not a static thing, or indissociable from individuals. My grandmothers had 6 and 8 kids, most of my cousins have 0-2 kids. So considering my grandmothers' behaviour and my cousins', Are they from the same culture? Will people that reproduce more today convince their children to do the same?
In either analysis, it's really hard to use natural selection as a predictive tool.
As for culture, it is not a static thing, or indissociable from individuals. My grandmothers had 6 and 8 kids, most of my cousins have 0-2 kids. So considering my grandmothers' behaviour and my cousins', Are they from the same culture? Will people that reproduce more today convince their children to do the same?
In either analysis, it's really hard to use natural selection as a predictive tool.