Over time I think we will probably see a closer merger of biological intelligence and digital intelligence.

If you look at space companies, they've failed either because they've had a technical solution where success was not a possible outcome, they were unable to attract a critical mass of talent, or they just ran out of money. The finish line is usually a lot further away than you think.

Silicon Valley has evolved a critical mass of engineers and venture capitalists and all the support structure - the law firms, the real estate, all that - that are all actually geared toward being accepting of startups.

Patience is a virtue, and I'm learning patience. It's a tough lesson.

I think it's amazing when technology is used in a smart way, but the responsibility that comes with it... I think there's a lot of technology that we're using that we haven't thought through. It's a bit scary to put all your trust in technology and to think that that's what going to save us. We're going to have to make some compromises.

Digital assets, including bitcoin, could save small businesses substantial transaction fees and provide an added layer of security to their payment processing.

It's a world where you're going to have a phone, a tablet, a computer - you don't have to choose. And so what's more important is how you seamlessly move between them all... It's not like this is a laptop person and that's a tablet person. It doesn't have to be that way.

Technology has come a long way since PayPal.