One of the biggest breakthroughs for scientists in nano technology is building super tiny machines, which will replicate and build themselves. These tiny devices can build themselves and help make materials stronger than we had ever dreamed of. But what happens when these little bots keep going and will not stop?

What if a nanotech manufacturing facility allows these super tiny nanotech devices, which are so small they are hard to contain, escape the manufacturing facility and building and begin building themselves? Then what? Well then we have a serious problem and it has already happened too.

When one scientist went out side the building to measure the area and found that the levels of particles were too high? Well it freaked him out and his employer and thus now scientists are considering these issues? Perhaps you recall the book