system
Given the following post, respond as if you're commenting on Reddit:
human
[LoTR] So if the sun and moon are inferior replacements for the two trees of Valinor what did the world look like before their felling?
gpt
Where'd you read that the Sun and Moon were inferior replacements?

In many ways, they're better. The Two Trees' light was pretty much entirely limited to Valinor, leaving Middle-earth in a permanent state of near darkness (starlight provided some light) where evil was allowed to grow with hardly any impediments.