>>3 sure keep this on that lower level, but nano bots are small enough you can create not only shapes of large size but of small as well. The shapes and forms are limited to physics, imagination and resources.
>>2 this is technically technology. this is not the idea for a story but a fear for the future I came up with 10 years ago. No doubt though that it is a powerful idea and easily could be made in the next 15 years if that.