When we face a choice between adding features and resolving security issues, we need to choose security.

Life is not fair get used to used to it

Kenya’s M-Pesa proves that when people are empowered, they will use digital tech to innovate on their own behalf.

In terms of doing things I take a fairly scientific approach to why things happen and how they happen. I don't know if there's a god or not, but I think religious principles are quite valid.

Cutting through complexity to find a solution runs through four predictable stages: determine a goal, find the highest-leverage approach, discover the ideal technology for that approach, and in the meantime, make the smartest application of the technology that you already have - whether it's something sophisticated, like a drug, or something simpler, like a bednet.

On my desk I have three screens, synchronized to form a single desktop. I can drag items from one screen to the next. Once you have that large display area, you'll never go back, because it has a direct impact on productivity.

There certainly is a case to be made that taxes should be more progressive.