Does Morality Evolve With Time?
I don’t think that it’s fair to assume that slavery was considered okay in the past. Just because it was prevalent in the past doesn’t mean that people in general were unaware of it being an evil. Had they not considered it to be evil, why would they even abolish it? A lot of times an evil is tolerated in societies due to circumstances, but overall people do know and understand that it’s evil. A present day example of this can be widespread financial corruption in our societies.