system
Given the following post, respond as if you're commenting on Reddit:
human
How many ISD would it take to take over earth?
gpt
One. We have no defenses that could reasonably stop an *Imperial*-class Star Destroyer from taking out major cities from orbit. We might be able to aim nukes at it, but odds are its countermeasure systems are so advanced that they'd have no issue dealing with them. That's really the only offensive capability we'd have. With enough patience, the Star Destroyer's commander could glass the entire surface without any noteworthy opposition.