system
Given the following post, respond as if you're commenting on Reddit:
human
[LOTR] Is Galadriel's Mirror really so useless like she describes it in the book?

It's like you get a random view of whatever, so what use can you make of that ever?
gpt
It's like all magic that lets you see the future, its one potential path of what happens, whether its already happened or not yet, it just depends on what's being seen.  Its only useless if you're not wise enough to be able to take what's been shown and understand why it might be happening.