system
Given the following post, respond as if you're commenting on Reddit:
human
[Attack on Titan] Could the humans have won the battle of Trost without Erin?

Regardless of the monetary or human cost, is there any tactic they could have used to stop the Titans without Erin's shifting ability?
gpt
Heavens no. 

The key issue was the giant hole in the wall; something the humans couldn't safely fix, if they could fix it at all. Without that hole plugged there was no way to stop the constant stream of titans.