The Nanotechnology Is It the End of Hi-Tech Evolution or the Starting of New Era ?

In the 21st century, we are moving towards a new era of technological power, one that offers enormous promises for the future and enormous dangerous as well. Scientists are planning to create new tiny computers; smaller than specks of dust, programmed to travel in a cloud over a country & send back pictures.. Unlike robot aircraft this camera caul be shot down; bullets will pass right through it, 'Such tiny' computers will weaken in time, however they can be programmed to be self-reproducing, to replenish themselves. The risk is these tiny computers begin to evolve and the aggregate cloud becomes a death - dealing swarm that threatens mankind, It is the greatest challenge to us to face these drastic changes in future with perfect skill and best ability to adapt to and manage.