Comment: Re:Spirit and Opportunity set unrealistic expectat (Score 3, Insightful) 63
I remember seeing a video where they did the math and for a 3 month stay on the ground and round trip from here to there you'd have needed a ship bigger than the empire state building
Your "math" is incredibly bad. Read any book on Mars from Zubrin and become educated.
What you are overlooking is that one human in one day could day about 100x the total research done so far by all of the rovers combined. What doesn't make sense is to continue to send very expensive robots to learn less and less... we've reached the point where we simply need to send humans to really study the place.