Here’s a current example of the challenge we face. At the height of its power, the photography company Kodak employed more than 140,000 people and was worth $28 billion. They even invented the first digital camera. But today Kodak is bankrupt, and the new face of digital photography has become Instagram. When Instagram was sold to Facebook for a billion dollars in 2012, it employed only thirteen people. Where did all those jobs disappear to? And what happened to the wealth that all those middle-class jobs created?

Is war an inevitable outcome of competing interests in a complex society? In other words, would war be the same even if human nature were very different? There are mathematical models of large groups working together that lead to conflict on a reliable basis. So there's a whole other view of war that is not psychological at all.

Anonymous blog comments, vapid video pranks and lightweight mash-ups may seem trivial and harmless, but as a whole, this widespread practice of fragmentary, impersonal communication has demeaned personal interaction.

Pop culture has entered into a nostalgic malaise. Online culture is dominated by trivial mashups of the culture that existed before the onset of mashups, and by fandom responding to the dwindling outposts of centralized mass media. It is a culture of reaction without action.

The upheavals [of artificial intelligence] can escalate quickly and become scarier and even cataclysmic,” the New York Times tech columnist once wrote. “Imagine how a medical robot, originally programmed to rid cancer, could conclude that the best way to obliterate cancer is to exterminate humans who are genetically prone to the disease.

A digital sound sample in angry rap doesn't correspond to the graffiti but the wall.

I think most of the dramatic new ideas come from little companies that then grow big.