If you are the record label who owns Lady Gaga, and you have a new artist coming up, you can say, 'Let's have the artist play just before Gaga.' Now you've exposed the huge Gaga audience to the new artist. It's similar to showing a trailer before a movie. The hit creates a hit.

Jay Z is building a range of businesses just on the strength of his brand. Lady Gaga has formed really interesting partnerships. Justin Bieber and his manager Scooter Braun are investing in a number of different companies and also promoting them in many ways.

In investing, we intuitively think we should make a number of small bets. A blockbuster strategy is the opposite. It means making fewer huge investments. But it turns out to be safer.

With so much money invested in their most promising projects, Hollywood executives will understandably do everything in their power to make their products a success in the marketplace. Therefore, the most expensive films often also get the highest marketing budgets, and are slotted into the most favorable opening weekends.

I never... it's a hard thing: when I think about projects, I don't come off something and go, 'I really want to make a sci-fi film next,' or 'I really want to do a political thriller next.' It's really coming across - I'm really fascinated, partly by world building, but also about the character and what the journey is.

Space travel for everyone is the next frontier in the human experience.

When you grow up in a place, you always think it's mundane. Then you travel around and live in different places, and you realise that you've got it the wrong way 'round.

I look on life as a joyous adventure.