Let's think about the way we have treated each other over the course of human history.
Think about the Crusades and how countless thousands were slaughtered in the name of God. Ordinary people could commit acts of barbarism at that time that we would only attribute today to psychopathic serial killers. Never mind for a moment the religious aspect of that horror; just the fact that so many felt that human lives could be snuffed out for simply believing the wrong things is unimaginable. And the argument that life did not have the same value back then only supports my point. We've changed.
Think about slavery. The practice of owning other humans was deemed acceptable for eons, and scripture was even used to support that position. Not all who supported slavery were heartless monsters. The practice was so widespread that it is simply not possible. It's not that they didn't know any better; there wasn't any better to know. Many were good people who were simply operating within the parameters of the "humanity software" of the times. An upgrade was needed, and with time it came.
We could go on. There are countless examples of how we treated our fellow human beings with unimaginable cruelty. The problem of course is that we are looking back through the lens of our current worldview. There's no avoiding that but we need to grasp that what is abhorrent to us now was considered normal and acceptable then, at least to the majority of people. That is what we need to get our heads around. We haven't just tightened up our morals, we have changed who we are, and what it means to be human.
Stay tuned for The Flintstones Fallacy and The Word of God: Part 3