“Basically, through a really harsh approach, he established two hundred years of world peace,” Zuckerberg explained to writer Evan Osnos. “What are the trade-offs in that? On the one hand, world peace is a long-term goal that people talk about today. Two hundred years feels unattainable.” That was the CliffsNotes version of Pax Romana, with only a glancing acknowledgment of the price of that peace, including subjugation, colonization, and so, so much death. Zuckerberg seemed to grok the downsides, noting the era “didn’t come for free.”

