This is true..

But don't forget, there are a lot of other jobs on a film set.. The "talent" end of it is just one small piece of the puzzle. That's why there is Producers, agents, managers, accountants, lawyers, etc.
The logistics teams are equally important to making a film. A director is nothing with out his team...

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"When two people agree on everything, one of them is not necessary" - Arliss