From Harvard's Moral Sense Test: Over the past twenty years, there has been growing evidence for a universally shared moral faculty
I agree human nature contains the propensity towards good acts, we are coalition animals so it is absolutely necessary.
What I don't agree with is how this translates to people in ancient societies secretly knowing that behaviours their society deemed noble, were in fact wrong because they were mean to people from other social groups.
Before you used the term 'innocent', as in we know it's wrong to harm innocents. My issue with this is that innocent is a purely subjective concept, and people deemed 'not innocent' are fair game for violence. For much of human history, all it took to be 'not innocent' was being anyone other than a member of the in group.
This reflects the behaviour of our close relatives the chimps, who can be stunningly cruel to outsiders or to those cast out of the troop.
The five reasons why you are missing humanity's moral progress.
Well, none of those actually apply to my reasoning, I accept that certain metrics do show a decrease in violent behaviour at the civil level.
First of all, I'd like to see a case made for the reasons why these relate to moral progress, rather than environmental/technological changes in society though.
Look at Syria, Bosnia, Chechnya, Ambon, Rwanda, CAR, etc. for what can happen when the safety net surrounding societies breaks down.
When the atrocities of the 20th C are only just behind us, moral progress seems a bit hollow.
I'd say the modern environment makes it easier for more people to display the better side of human nature, but our 'progress' is severely tested when we feel threatened, and likely disappears when our environment no longer (near) guarantees our safety.
Harvard psychologist Steven Pinker makes a well-documented case for moral progress in his book History and the Decline of Human Violence.
The problem with Pinker's book is that the statistics he uses for violence are wrong, and he seems to be cheery picking the highest death value for ancient conflicts. 36 million for An Lushan or 17 million for Tumur are simply false, and all casualty figures for ancient conflicts are basically made up, often for propaganda reasons. If you want to see how accurate people were at estimating numbers back then, look at the claims regarding size of armies, the do a little research on its plausibility (Herodotus claimed the Persians brought 2.5 million troops + 2.5 million support personnel perhaps 15-20+ times more than the likely figure)
He also, conveniently, bases his arguments on trends after WW2 which is not exactly scientific.
They also invariably include deaths from disease/famine too, yet he doesn't include deaths from Spanish Flu after WW1 which is inconsistent.
Also his assumption that violence should scale in direct proportion to human population is highly debatable. If violence grew 1% more slowly than population, should we still assume that this indicates 'moral progress'?
A WW3 could also pretty easily make these figures a hell of a lot different, and create a trend showing how we have got 'more violent'.