system
Given the following post, respond as if you're commenting on Reddit:
human
What can be learned from bringing a martian sample back to earth, that can't be learned with a rover?

What significant benefits would there be using earth's tools? Would it be worth the cost to return the sample?
gpt
While the instruments we can put on rovers are good, they are nothing compared to the kind of instruments we have here on Earth, which could offer a massive increase in sensitivity, accuracy and sheer breadth of analysis.