The Dell Theory of Conflict Prevention argues that no two countries that are both part of the same global supply chain will ever fight a war as long as they are each part of that supply chain.

When you study history and look at every civilization that has grown up and died off, they all leave one remnant: a major sports colosseum at the heart of their capital. Our fate can be different; but only if we start doing things differently.

Basically all the world's computer parts come from the same supply chain that runs from Korea, down through coastal China, over to Taiwan, and down to Malaysia.

I have no problem with a war for oil-if we accompany it with a real program for energy conservation. But when we tell the world we couldn't care less about climate change, that we feel entitled to drive whatever big cars we feel like, that we feel entitled to consume however much oil we like, the message we send is that a war for oil in the gulf is not a war to protect the world's right to economic survival-but our right to indulge. Now that will be seen as immoral.

Desktop freelancers and innovative startups all over the world

I attended public school with the same group of kids from K through 12.

Until we fully understand what turned two brothers who allegedly perpetrated the Boston Marathon bombings into murderers, it is hard to make any policy recommendation other than this: We need to redouble our efforts to make America stronger and healthier so it remains a vibrant counterexample to whatever bigoted ideology may have gripped these young men....And the best place to start is with a carbon tax.