The average person is now 20 times less likely to die a violent death than a human in the Stone Age.
But 1980 was the Stone Age compared to today's political and media culture.
But the percentage of humans who died a violent death continued to drop from the Stone Age rate of 10 to 15 percent.
A period encompassing all of human history, perhaps several million years, before the Bronze Age. In the Stone Age, people learned to make and use stone tools and weapons.