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 don't think information overload is a function of the volume of information. It's a derivative of the volume of information plus the sense-making tools you have.

As recently as the '70s, people were forced to see information that they didn't agree with in newspapers and the like. Now there is so much information you really can build your own walled garden that just has the stuff that reinforces your view. I think it applies to all of us. People are really going into these separate camps, and that's the big social challenge in this age of too much information. How do we crack that and create a common dialogue?

We've become more and more interrupt-driven. If you have six tasks to do in an hour, you can't just take 60 minutes and divide and have 10 minutes per task. You have 10 minutes per task minus the time required for context-shifting. That will be the next big challenge: figuring out how to fight the distraction-driven mode we're in and stay focused on one thing long enough to get it done.

More information and more communications foster world peace and understanding. But connecting extremist nut cases together on the Web - whatever flavor extremism they are - is a really bad thing. More information may not be a good thing, either.

Responding to climate change will become the obsession of the next decade in much the same way terrorism was this decade's obsession.

Take cyberspace as an example. We had this wonderful utopian vision of a new home for the mind. What we've reaped isn't cyberspace. It's cyberbia. It's this vast, bland wasteland of vulgar people and trivial ideas and pictures of half-naked starlets. But despite all the uncertainty, has there ever been a more fascinating moment to be alive?