I'm actually an optimist about what lies ahead. Are wikis reliable? It depends on the specific business. Is Wikipedia reliable? You bet. Wikipedia is a researcher's dream.

I think companies over the last 10 years have done a very bad job of explaining to their employees what the intrinsic risks are. All I know is, if you wait until you let the employee go to deal with the issue of how do you communicate to the employee about being let go, it's too late to do anything.

If you look at the last 150 years, about every 30 years or so, a new scientific discipline emerges that starts spinning out technologies and capturing people's imaginations. Go back to 1900: That industry was chemistry. People had chemistry sets. In the 1930s, it was the rise of physics and physicists. They build on each other. Chemists laid the experimental understanding for the physicists to build their theories. It was three physicists who invented the transistor in 1947. That started the information revolution. Today, kids get computers.

I'm not sure the notion of employee or job is going to survive the transition over the next couple of decades. The very notion of a fulltime job will seem as quaint in 20 years as the notion of someone getting a gold watch at their retirement in the 1950s.

It turns out it takes 30 years for a new idea to seep into the culture. Technology does not drive change. It is our collective response to the options and opportunities presented by technology that drives change.

It's interesting to see the lament of each generation overwhelmed by the next new tool. I can show you passages from scholars of Germany in the 1480s lamenting the fact that they are overloaded with all this stuff to read because of the printing press.

Sometimes I think we're on this world for three reasons: to be useful, to tell each other stories and to collect stuff. It's the only explanation for eBay. We love to collect stuff, and at least if we're collecting stuff in cyberspace we're not deforesting the Sierra Nevada.