Zack Beauchamp in Vox:
A key part of Pinker's work is the notion of the “long peace” — an idea that Pinker actually borrows from a historian, John Lewis Gaddis. It refers to the fact that in the past 70 years, wars between great powers have basically gone away. Because situations like the Cold War never escalated to direct conflict, we've managed to avoid the type of warfare that devastated societies in the early 20th century and, indeed, much of human history.
If the causes of that are, as Pinker suggested in a lecture, “the pacifying forces” of “democracy, trade, and international society,” then we should expect this trend to continue. So long as we continue to maintain the trends of the world we live in, including growing international trade, strengthening of international institutions like the UN, and strong diplomatic ties between democratic states, then we might actually be able to keep making the world a better place.
Enter NYU professor Nassim Nicholas Taleb, who is best known as the author of The Black Swan, a book on rare events. He thinks all of this is starry-eyed nonsense. In his opinion, proponents of the “war is declining” argument are over-interpreting evidence of a good trend in the same way people used to argue that the stock market could go up forever without crashes. He wrote a stinging critique of Pinker's work, which Pinker replied to, and then Taleb replied to again.
Taleb's new paper, co-authored with Delft University's Pasquale Cirillo, is the latest volley in that ongoing intellectual war. It's probably the most statistically sophisticated argument to date that war isn't declining — and that we're still every bit at risk of a major conflict as we always were.