I don’t think that’s what happened. I think evolution put us on the path to understanding the world around us. We became better at it that any other living being. Then at some point (recently from our point of view), culture became the driving force behind our progress. Without culture, maybe we’d have evolved to be better at avoiding logical fallacies, like you say, or maybe not. But evolution is too slow compared to culture, so from our historical point of view, our genome is stopped halfway towards rationality and if we want to get better we have to learn it individually. That doesn’t mean being halfway rational is an evolutionary optimum.
I don’t think that’s what happened. I think evolution put us on the path to understanding the world around us. We became better at it that any other living being. Then at some point (recently from our point of view), culture became the driving force behind our progress. Without culture, maybe we’d have evolved to be better at avoiding logical fallacies, like you say, or maybe not. But evolution is too slow compared to culture, so from our historical point of view, our genome is stopped halfway towards rationality and if we want to get better we have to learn it individually. That doesn’t mean being halfway rational is an evolutionary optimum.