nasir: it came about from a app that i use, uber, it was amazing. >> would you fix your tie, please? david: people wouldn't recognize me if my tie was fixed. just leave it this way. alright. ♪ david: i don't consider myself a journalist, and nobody else would consider myself a journalist. i began to take on the life of being an interviewer, even though i have a day job of running a private equity firm. how do you define leadership? what is it that makes somebody tick? we are here today with his excellency, yasir al-rumayyan, who is both the chairman of saudi aramco and also the head of the pif, the saudi sovereign wealth fund. so you have both jobs. how do you allocate your time between running the sovereign wealth fund, pif, and being the chair of saudi aramco? doesn't that take you 80 or 100 hours a week? yasir: pif role is executive, the aramco is chairmanship. i do not have the executive chairmanship role. in aramco, i focus on four things, the strategy, the targets, annual targets we have, the monitoring of the performance, and managing the actual board. i'm a board member, the