It's really up to the acting community to be willing to be educated about what performance capture is in order to fully appreciate it as acting. It's not a type of acting, but rather the use of technology to harness an actor's performance and translate it into an ape, another animal, or an avatar of some kind.

Yeah, I mean, climbing's always been a massive hobby of mine up until, kind of, recent times when I've had family, but no, it's been a driving passion in my life and, uh, I've always wanted to climb the Matterhorn. It was the mountain that, sort of, inspired me to climb, as a youngster. So, it was great to be able to get to do it.

Animators do amazing working translating and interpolating the characters [in the Planet of the apes], the facial performances. What we're creating on set - if you don't get it on the day, in the moment, on set, in front of the camera, with the director and the actors. The emotional content of the scene and the acting choices.

Rather than something like King Kong where I really went after studying gorillas in the wild and captivity. I based Caesar [ from the Rise of the Planet of the Apes] on a real chimpanzee and I worked with Terry [Notary] on a lot of chimpanzee movement.

Gorillas are still wild creatures. That's made very clear when you observe them in nature. They charge and perform other displays that are terrifying by design. But they don't attack unless they feel threatened.

Everybody thinks performance capture is about thrashing around and doing a lots of movement, but it's actually about being able to contain and think and be believed in a close-up, as much as anything else.

Gorilla tourism is vital to Rwanda's economy: It's the third highest source of income.