If Facebook were a country, it would be the 8th most populated in the world, just ahead of Japan.

You grow more when you get more people's perspective.

The unsupervised learning is the way most people will learn in the future. You have this model of how the world works in your head and you're refining it to predict what you think is going to happen in the future.

Facebook is really about communicating and telling stories... We think that people can really help spread awareness of organ donation and that they want to participate in this to their friends. And that can be a big part of helping solve the crisis that's out there.

Google, I think, in some ways, is more competitive and certainly is trying to build their own little version of Facebook.

So many businesses get worried about looking like they might make a mistake, they become afraid to take any risk.

When you give everyone a voice and give people power, the system usually ends up in a really good place. So, what we view our role as, is giving people that power.