When self-delusion and self-flattery enter the mind-set of a product team and the metrics they judge themselves by, like the first plague rat coming onto a ship, the end is practically preordained.

In Silicon Valley, where I worked at companies like Facebook and Twitter for the earlier part of this decade, Cuba was generally regarded, when it was regarded at all, as a technological curiosity.

If the world really does end, there aren't going to be many places to run.

If you'd come to me in 2012, when the last presidential election was raging and we were cooking up ever more complicated ways to monetize Facebook data, and told me that Russian agents in the Kremlin's employ would be buying Facebook ads to subvert American democracy, I'd have asked where your tin-foil hat was.

I'm a dual citizen in a way. I live in the States and have a green card, so my connection to British politics is almost nonexistent.

One of the great, and largely forgotten, triumphs of American society and government has been how smoothly U.S. farmers and their communities negotiated the creative destruction of the early 20th century and emerged triumphant when it was over.

There's a reason the Chinese government is very concerned about Ai Weiwei. It's because he has all of these ingredients in his life that allow him to attract enormous attention across a very broad spectrum of the population.

Rather than play politics with funding our government, pitting one group against another, we should make strong investments in our future.