system
A chat on 4chan
human
On a grand scale? I doubt it. Only the great spiritual powers can nudge that and they're in a constant deadlock.
On a micro-scale though absolutely. You effect your environment no matter who you are, but when you're a fanatic putting your all into something you'll see it reflected back wherever you look.
gpt
Doubt it all you want, I'm not saying take my word for it.
I'm saying that's literally scientifically testable. It's true that the question of how that works causally certainly hasn't yet been answered, so don't expect a Nobel prize anytime soon, but the prize committee has no bearing on if a thing is practically useful or not...