Larry Niven wrote about a bacterium that ate a very specific substance (superconductor cloth). It was seeded on the Ringworld as a bioweapon, and (Niven implies) was specifically engineered not to drift. His bug bore little if any relation to the kind of "gray goo" that mutates to eat a wide spectrum of stuff.
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Larry Niven wrote about a bacterium that ate a very specific substance (superconductor cloth). It was seeded on the Ringworld as a bioweapon, and (Niven implies) was specifically engineered not to drift. His bug bore little if any relation to the kind of "gray goo" that mutates to eat a wide spectrum of stuff.