system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5 Why do TV shows have different directors for each episode?
gpt
The first reason is purely practicality. TV production is much more fast paced than film production, and there are almost always multiple episodes in different stages of their production being made. Therefore it is much more efficient and usually better for the end product to have different creative forces (writers, directors, etc.) behind each episode.

The second reason is simply to provide variety to the show. On any kind of art it can be very helpful to bring in fresh perspectives to the project. A lot of television show runners want to keep the audience excited with new, varying styles, and a lot of the time different directors are even better at certain types of episodes than others (think an episode with a lot of car chases and explosions vs. one based mostly around dialogue).

This all really varies with the show. An extreme example is the show LOST, where different writers an directors were even paired with their own characters. Each time an episode focused on a certain character, those writers and directors were much more likely to work on that episode.