There are some who theorize liberalism is an evolutionary step. For the first time in history, there are people who actually give a damn about people with whom they have nothing in common. People who look different, sound different, smell different, act different, love different, live different, and worship different. Liberals are okay with that. As long as they’re decent people otherwise. It’s not the differences that matter, it’s the similarities.
Liberals realize that despite the differences in location, skin color, diet, religion, and whatever else, most people are just trying to live a fulfilling life and provide an opportunity for their children to have a better life than they did.
It’s not normal for humans to care about people outside their clan. This is a relatively new development, and I suppose if there’s a case to be made for it as an evolutionary divergence, the jury’s still out about whether it’s a survival trait or not.
I will say this, though. Liberals are aware that what we do to the planet affects everyone. Conservatives are still concerned that someone they don’t know might want an abortion.
Yeah, sometimes it seems like they’re not that bright. But maybe they’re just the ones we’re leaving behind? Homo neanderthal to our homo sapiens? Or homo sapiens to our homo liberalis.