It seems like you watched "The Martian" movie, lol. It doesn't work like that. It's a low-gravity, very low air density, hot desert. Wear a hefty suit, go to the middle of the Sahara desert during a blood moon kinda day, that's pretty much mars. If some specific information has to be obtained, by all means, send robots/orbiters. Curiosity rover, MOM, etc do that, and do it much more efficiently than humans could. The computational analysis is gonna be done on Earth anyway. In case you wanna talk about future settlement, even that has to be simulated here, and only executed over there. Testing is not gonna happen there.