In the coming decades, it is likely that we will see more Internet-like revolutions, in which technology steals a march on politics. Artificial intel… - Yuval Noah Harari

So if you blame Facebook, Trump, or Putin for ushering in a new and frightening era of post-truth, remind yourself that centuries ago millions of Christians locked themselves inside a self-reinforcing mythological bubble, never daring to question the factual veracity of the Bible, while millions of Muslims put their unquestioning faith in the Quran. For millennia, much of what passed for “news” and “facts” in human social networks were stories about miracles, angels, demons, and witches, with bold reporters giving live coverage straight from the deepest pits of the underworld. We have zero scientific evidence that Eve was tempted by the serpent, that the souls of all infidels burn in hell after they die, or that the creator of the universe doesn’t like it when a Brahmin marries a Dalit — yet billions of people have believed in these stories for thousands of years. Some fake news lasts forever.

This is all the fault of evolution. For countless generations our biochemical system adapted to increasing our chances of survival and reproduction, not our happiness.

Diogenes, the Greek philosopher who founded the Cynical school, lived in a barrel. When Alexander the Great once visited Diogenes as he was relaxing in the sun, and asked if there were anything he might do for him, the Cynic answered the all-powerful conqueror, ‘Yes, there is something you can do for me. Please move a little to the side. You are blocking the sunlight.