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When you get many opportunities early on, and you have people who have been working for a while counting on you, you have to at least pretend that you know what you're doing. So any actor that's pretending, you start to develop philosophies. Without years and years of experience, you kind of go with an attitude that you know what you're doing. And so I think right around that time, I was kind of at the peak of rigidly thinking that I knew how to work in film in a way that I wanted to. Cameron was extremely patient and generous with me.

Source: www.avclub.com
When you get many opportunities early on, and you have people who have been working for a while counting on you, you have to at least pretend that you know what you're doing. So any actor that's pretending, you start to