These days, if you find yourself feeling negative about the future of humanity, you may find some solace in looking at the past.
If you were born at the beginning of the 20th century, you could expect to live about 31 years based on global averages. Today, around the world, the average human life span is more than 67 years, and in developed nations it’s more than 80. A big reason for the extension of average life spans is the improvement in the health of children. In 1900, 10 percent of babies born in the United States died before their first birthdays. Our current infant mortality rate is less than 1 percent.
In 1820, 85 percent of human beings were desperately poor, living on the equivalent of less than $1 a day. Today, just 20 percent of us live in those dire straits, and that number continues to fall. Some experts think we will have completely eliminated that level of extreme poverty by the beginning of the next century.
Author Steven Pinker compellingly describes how violence has diminished across human history in his new book, The Better Angels of Our Nature: Why Violence Has Declined
In these anxious times, it’s easy to forget how much safer, richer, warmer, cleaner and healthier we are than previous generations. The profound risk in forgetting what we’ve accomplished is, of course, that in our ignorance, we might unconsciously lose some of what we’ve gained.
As Pinker says, “Whatever its causes, the decline of violence has profound implications. It is not a license for complacency: We enjoy the peace we find today because people in past generations were appalled by the violence in their time and worked to end it, and so we should work to end the appalling violence in our time.”
Furthermore, we should study what we’ve accomplished to see whether we can get better at it. “Man’s inhumanity to man has long been a subject for moralization,” Pinker says. “With the knowledge that something has driven it dramatically down, we can also treat it as a matter of cause and effect. Instead of asking, ‘Why is there war?’ we might ask, ‘Why is there peace?’ ... We must have been doing something right. And it would be nice to know what, exactly, it is.”
Still, looking at what we’ve achieved, it doesn’t seem unreasonable to think we can solve present and future challenges. We can live on this planet in a sustainable way. We can preserve its health and vitality for future generations. And we can make the lives of future human beings even better than the lives we lead today — we have a track record for that kind of achievement.