If you think the technology is infeasible, you don't worry about what it might do and what its potential is.

If you look at the various strategies available for dealing with a new technology, sticking your head in the sand is not the most plausible strategy.

If we attempt to block the development of new technology, we effectively have ensured that the most responsible parties will not develop them.

If we can reduce the cost and improve the quality of medical technology through advances in nanotechnology, we can more widely address the medical conditions that are prevalent and reduce the level of human suffering.

We can grow crops less expensively because molecular manufacturing technology is inherently low cost.

The laws of physics should allow us to arrange things molecule by molecule and even atom by atom, and at some point it was inevitable that we would develop a technology that would let us do this.