Advertisers and marketers should be looking to bring new experiences to different parts of the brain. It's a more profound idea than just dropping a billboard into a video game.

It's as if you kneel to plant the seed of a tree and it grows so fast that it swallows your whole town before you can even rise to your feet.

The most effective young Facebook users, however -- the ones who will probably be winners if Facebook turns out to be a model of the future they will inhabit as adults -- are the ones who create successful online fictions about themselves.

Eliminating wickedness is a different project from eliminating violence. Eliminating violence - the destruction associated with wickedness - is a practical program that I'm very willing to pursue.

There were studies that asked people in different cultures to draw pictures of their enemies, and the pictures all looked remarkably the same. They always had exaggerated canine teeth and a certain sort of expression. That led to speculation about whether at an earlier stage in the human experience we were hunted by some sort of carnivore.

Back in the 1980s, when the internet was only available to a small number of pioneers, I was often confronted by people who feared that the strange technologies I was working on, like virtual reality, might unleash the demons of human nature. For instance, would people become addicted to virtual reality as if it were a drug? Would they become trapped in it, unable to escape back to the physical world where the rest of us live? Some of the questions were silly, and others were prescient.

At a minimum if we can just have enough distribution of clout in society so it isn't run by a tiny minority, then at the very least it gives us some room to breathe.