system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why do dreams feel much longer than they actually are?
gpt
Studies have shown that our perception of how much time has elapsed is significantly influenced by how memorable the experiences during that time were. If you drive to work the same way everyday, you'll probably have the experience of getting to work and not really even remembering the drive, like you were "driving on automatic." They have suggested that this is why the years seem to go by so much faster when we're older. When we're young, everything is a new experience. After we've experienced so many things repeatedly, out brains don't need to store so much information about them.

With that as context, I'd guess dreams that focus a lot of our thoughts could seem very long.