Perhaps concentrated wealth will inspire a nation of innovative problem-solvers. But if the view of many economists is right - that it sometimes discourages innovation - then we should worry.

Hating Wall Street is an American tradition that dates back even to the days when Thomas Jefferson cursed that money lover Alexander Hamilton. And for centuries, the complaints about it have largely stayed the same: 'It does nothing! It creates chaos! It's a parasite that sucks hardworking Americans dry!'

Unlike physics, economists don't settle things. There seems to be plenty of room for different conclusions that are still accepted in the academy.

If the American government can't stand behind the dollar, the world's benchmark currency, then the global financial system will very likely enter a new era in which there is much less trade and much less economic growth. It would be, by most accounts, the largest self-imposed financial disaster in history.

There's an adage that is an apt description of the new dynamic at work between brands and consumers connected through social media: People support what they help to build. But now that many brands are launching community-driven cause marketing campaigns, the challenge becomes what to do next?

I'm an invention of the Internet. I'm like, the Internet went away for a few years and designed what the perfect online personality would look like and came back with me.

I believe we are nearing a time when a combination of technology and radical thinking will make it possible for much more intensive and restrictive conditions to be applied in more creative and fundamental ways outside of prison.

I think technology is changing and growing, and the best approach to have is to be self-aware and aware of what's going on around you and also have some idea of who you are and how to make that ever-changing climate work in your favor.