RE: The rise of molecular robots
At the risk of sounding rude, or perhaps obvious, perhaps you missed the lecture in high scholl bio where they defined the criteria for what characteristics must be present for something to be a living organism. Saying something is alive because it uses DNA is like saying a car is alive because it has leather seats. That said, and being a biochemist, the folks who are messing with this stuff are doing some fascinating work. Just make sure the FDA watches what's going on before they get to making grey goo.