Engineers love to optimize problems. Now I optimize logistical problems. I ask: 'What's the goal? What are our constraints? What is the optimal, elegant way to get to that goal within those constraints?' I break it down in terms of a data funnel: 'Where in the funnel are we inefficient?' That analytical background really helps.

I was one of the key people responsible for building Facebook's News Feed. When we launched it in 2006, users hated it. There were 'I Hate Facebook' groups; random people organized protests. We even hired a security team.

Cove is essentially a collaboration, coordination and communication tool for the administration of organizations and communities, from the Stanford Graduate School of Business Entrepreneurship Club to church groups and schools.

Women need to understand that it is possible to stay in the workforce. A lot of women decide to take a back seat in their professional careers even before they are pregnant or are ready to have children.

I learned that the first technology appeared in the form of stone tools, 2.6 million years ago. First entertainment comes evidence from flutes that are 35,000 years old. And evidence for first design comes 75,000 years old - beads. And you can do the same with your genes and track them back in time.

As a filmmaker whose first film was made with the DIY tools of digital cinema, I love how the democratization of the filmmaking process and platforms like YouTube enables people to tell stories that in previous generations simply could not be told.

When I looked at the addictive qualities of video games and how they captivate people's attention, I decided to try the same technology for enhancing well-being.

It seems everyone is converging on a simple set of facts: Our lives are digital, and we wish to share our lives. Pinterest came at it through images, artfully curated. Facebook came at it through friends, cunningly organized. Dropbox came to it via files, cleverly clouded.