What if this were written in the 1850s? Of course slavery is normal. All cultures have had slavery. So all those loony abolitionists with their progress notions

What if this were written in the 1850s? Of course slavery is normal. All cultures have had slavery. So all those loony abolitionists with their progress notions are beating their heads against the fixity of human nature. Take your is-ought fallacy and... well... this is a family web site.