And Kreeft said the same thing: “For most of human history more powerful societies enslaved weaker societies, and prospered. That’s just the way it was, and no one questioned it." So you’ll need to clarify your point here and explain exactly how it has a bearing on Kreeft’s conclusions.
I’m surprised it wasn’t clear. If slavery was moral for most of history, how do we know the ancients weren’t right? Kreeft’s only reason is
we know better, he gives no reason other than we just do. That’s not philosophy, it’s playing to the gallery.
You’re argument has gone off the rails here. Kreeft acknowledges two different perspectives when comparing ancient outlooks on slavery and modern day ones:
Perspective #1: Slavery was accepted in the ancient world (this is a historical fact). Slavery is not accepted in today’s world (this is a modern day fact).
Slavery was accepted in
parts of the ancient world. Arguably perhaps, slavery is accepted in today’s world - e.g. see
money.cnn.es/2011/09/21/smallbusiness/app_forced_labor/index.htm
You didn’t seem to give perspective #2, so I got a bit lost after that.
*According to someone who embraces Perspective #1, all that we can say about the morality of slavery is that it is a strictly social phenomenon: We cannot impose our modern standard (i.e., “slavery is not accepted”) upon ancient people and make moral conclusions as a result. Therefore, we are not supposed to say that the ancient slave owners were evil. But if we can’t say that slavery was evil in the ancient world then we really aren’t in a position to criticize the institution of slavery as a whole.
*
Well no, obviously we can’t impose our standards on other cultures. I don’t see why that stops us saying slavery is wrong.
All this is summed up in Kreeft’s statement: ”If you can’t make that distinction between accepted and acceptable, you can’t criticize slavery”. But, as I’ve stated before, Kreeft’s video is aimed at people who already
do criticize slavery and share the common ground that slavery is never acceptable (which, incidentally, is perspective #2). Recall what I stated in
Notable Point #2.
As I said, he’s preaching to a choir, he’s just reading back what we already believe, there’s no logical argument.
*I don’t see your point here, so you’ll need to clarify it. If this stems from my comments concerning civil law then let me point out that I only brought up ancient and civil law as an objective way of demonstrating social outlooks concerning slavery.
*
What’s legal may not be moral. Abortion on demand may be legal but it doesn’t make it moral.
But Kreeft has to address evolution for the simple fact that many people cite evolution as the sole basis for morality. See Notable Point #1.
Correct or not, evolution of morality is a sophisticated argument based on evidence. Kreeft does nothing to dismiss it, e.g. see:
plato.stanford.edu/entries/morality-biology/
en.wikipedia.org/wiki/Evolution_of_morality
Then explain why. What exactly was “thought about” that led to the conclusion that slavery is “immoral”?
For me it would be the Golden Rule, which appeared in various forms in many cultures, coupled with the modern understanding that there are no “races” and all humans are equal, as
UDHR Article 1 puts it:
*All human beings are born free and equal in dignity and rights.They are endowed with reason and conscience and should act towards one another in a spirit of brotherhood.
*
I admit that I am a big fan of Kreeft, and I admit that I am a big fan of sarcasm and hyperbole. But exactly what are you implying with this statement? Are you suggesting that my comments in this thread are emotional and irrational as opposed to objective and rationale? If so, then kindly cite the comments I made where I displayed such “fawning” behavior. Do I have to consider Kreeft’s words to be “holy” in order to believe that they should first be actually demonstrated to be fallacious before being branded as such?
No I wasn’t implying that

. I’m just uneasy that we’ve probably spent longer discussing the video than Kreeft took to make it. It’s just one of billions of videos, is it really worth all this analysis?