system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How do "long exposure" pictures work?

I've recently seen a lot of these and they seem so cool.
gpt
A camera-- to simplify-- takes in light to create an image (much like our eyes).

A long exposure just keeps that eye (the shutter) open longer, so that more light gets processed into the final picture.