I have farmed potatoes. But I've never had to grow taters to survive on Mars. Yet, while reading Andy Weir's "The Martian," I felt like I had. A great story with a setting that can't be swapped. Mark Watney wouldn't be as compelling if the book were "The Idahoan." A story where the majority of the population is in favor of spending billions of dollars to help one farmer out doesn't seem plausible. But put him on Mars and it works.