system
Given the following post, respond as if you're commenting on Reddit:
human
[Doctor Who] Why doesn't the Doctor overthrow tyranny on Earth as often as other planets?
gpt
There are a lot of dictators on a lot of planets in a lot of times. They aren't necessarily shown, especially if the doctor is NOT visiting those times. So yes, he does overthrow tyranny plenty of times, he's not exactly cleaning them all up either. Another question to ask: maybe he has overthrown tyranny on earth, or prevented it in some way. Maybe he's done that dozens of times. You'd never know, because he made it so it never happened, or was thwarted before getting big. You ONLY know about the ones he hasn't stopped.