answer:Robots are still not that smart or dexterous compared to humans. Even tele-robotic (human-controlled) devices are limited in mobility. Not that those tracked robotic vehicles described in the article aren’t cool looking and probably helpful. But when it comes to critical missions with unpredictable obstacles and unscheduled tasks, live humans rule. I know, the Mars rovers were spectacular! Maybe in another 50 years… Presumably robots would be invulnerable to all but the most intense radiation. Electronics can be protected by heavy shielding around chips, while motors, wiring, and structural elements should function fine unless they melt from heat.