system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why are Cinematic movies shot in only 24fps?
gpt
It's for historical reasons.  In the very early days, over 100 years ago now, a range of frame rates were tried before a standard emerged.  Film was expensive and not very light sensitive so they basically went with the lowest acceptable rate.  Even so, projectors display each frame twice, fudging a 48fps rate, to reduce the flicker effect.  This is very similar to the way TV uses interlacing to display 60 "fields" per second with only 30 full frames.