system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: What does a producer do and why are they so valuable in media? Films/tv/radio. How can some films have so many?
gpt
There's different Producers.  Producers are the project managers of various aspects of a production (thus producer > production).

An Executive Producer does the wheeling and dealing.  They may be named EP after they give money as a sort of 'hey, this guy is in on the project' to investors, or may be a working EP, who actually gets investors, seals deals on locations, etc.

A Line Producer does the day to day management of stuff on set.  Coordinating everyone on the backend, the actors, director, etc.  Then the Film's Producer manages all of this together to make sure the film comes out. 

A Producer may be a Line Producer and/or an Executive Producer as well as the film's major Producer.