If there's someone who's solved the box office equation, James Cameron is probably it. The Oscar-winning filmmaker has had the privilege of the first two films to gross over $2 billion in movie history, doing so with 1997's Titanic and 2009's Avatar. However, the visionary director is aware that his films aren't guaranteed to be a success.

As per Slash Film, Cameron revealed in a recent Empire interview that the Avatar sequels can always fail.

Here's what Cameron said about "the dumbest business case in history." If we did 20 per cent or 30 per cent less because the market simply doesn't exist anymore, that would be bad.

The trolls will have it that nobody gives a s*** and they can't remember the characters' names or one damn thing that happened in the movie ... Then they see the movie again and go, 'Oh okay, excuse me, let me just shut the f*** up right now.' So I'm not worried about that." For what it's worth, it's valid to criticize Avatar. Unlike its contemporaries in the $2 billion box office space, people very rarely talk about Avatar. The film practically disappeared from the public consciousness despite retaining its hold on the top spot for over a decade. But, at the same time, Cameron has proven time and time again that he knows what he's doing. You could argue that the only flop in Cameron's legendary resume is 1982's Piranha II: The Spawning, which only doubled its nearly $150,000 budget, give or take.