If it were anyone else in Hollywood, I'd agree. However, James Cameron is kind of a unique individual. I know someone who worked with him for several years on A

If it were anyone else in Hollywood, I'd agree. However, James Cameron is kind of a unique individual. I know someone who worked with him for several years on Avatar, and the stories I've heard are intriguing. Cameron has extreme attention to detail, which is why his films tend to take much longer to produce than other features. What I've heard is that Cameron wanted to look at Avatar fully rendered frame by frame before approving it. He also, by all accounts, has developed genuine expertise in deep sea diving by having the same attention to detail. This isn't to say he's doing the design all by himself. Rather, he worked with engineers and designers to build subs, and is meticulous on every detail with them, the same process he uses on his films. His expertise speaks for itself: his sub has dived into the Challenger Deep successfully, because it was solidly & competently engineered.