OK so we are doing a new game and nanofabricators are eating it! So lets hypothetically say that one Neck-Beard of a man who knows slightly more about science and the future than the rest of the players and the GM. Maybe he reads a lot of Wired Magazine, it's not really important, what is important is nanites. First while the rest of us are making well rounded and emotionally well adjusted spunky little adventurers our Neckbeard friend is creating something similar to the Nanoswarm Criminal Hacker example character in the book. Except that he scooped out all of those "useless" social skill in favor of other skills that are relevant to what he is about to do next. So he does the whole Criminal Rep + Networking trick to get his hands on a small Cornucopia Machine and promptly hacks the safeties out of it. We just though he wanted to make a gun or whatever. He uses the CM and some nearby asteroid bits to make another Nanoswarm body. Then using some hacker skill augmented beta-forking gymnastics he sets the other body harvesting whatever nanoswarms are made out of. 2 nanoswarms make 4, and those 4 make 8 which make another 16 and so on. And this is all during the first few minutes of scenario before our ship can dock in "Starting Scenario Space Station" The GM and the rest of the party are starting to get worried about being subsumed by a cloud of tiny tiny robots. So a bit of an argument starts, techno babble flies everywhere, the Law Of Diminishing Returns gets one or two mentions, Wikipedia is consulted. Eventually the GM pronounces, "You can't do that because you just can't. Knock it off!" An hour or two pass. And while Neckbeard sulks we talk to some NPCs, make some contacts, and pick up a quest or two. Then while we are working on starting some sort of robot proletariat revolt Neckbeard perks up and asks, "What's a sports car made out of?" After a trip back to the asteroids Neckbeard is ready to roll the dice. First he uses the CM to build parts for a bigger CM machine. This started another small argument. Neckbeard won round 2. after a successful Knowledge: Earth History, Vehicle Design, Forgery, and Nanofabricator Programming roll the craziness begins. (I am not sure if the skill names are correct I wasn't really paying attention) but I did take notice when there was a 72' Charger in the cargo bay. The idea was that if relics like coins and stamps are worth millions then logically a (seemingly realistic) 70s muscle car should let him buy Jupiter. Or at least bribe the union leader we spent all scenario making nice with to start a labor strike. At this point the third and final argument of the night started. Now the GM had the rest of the players on his side when there was the threat of Neckbeard nanite assimilation. But when a party full of gritty underdog heroes hears, "You get a new car! and you get a new car! Everybody gets a new car!" they change their tune. Well anyway, long story short, Neckbeard probably isn't coming to another game. But it does raise th question, "Can one unbalanced individual with a nanofabricator destroy the universe?"