There’s a joke about being on a film set (which I heard from a washed up writer, fittingly) that basically is:
New Person on set being shown around by Experiemced Person.
NP: What does she do?
EP: She’s the DP, she lights and shoots.
NP: What does he do?
EP: He’s the writer, he writes the film and dialog.
*Repeat a few more times.
NP: Well if he wrote it, and she shoots it,(etc) What does the director do.