It's sci-fi...sure...just like instantly sending messages across the world was 200 years ago. The point is that it is perfectly feasible that this will indeed h

It's sci-fi...sure...just like instantly sending messages across the world was 200 years ago. The point is that it is perfectly feasible that this will indeed happen, but the author suggests that "engineering" won't solve the problem because it's "organic" and "ecological". Well, so were many other diseases over the course of human history which are now virtually eradicated. Nanobots are not necessarily just tiny tumor resectors, they could be implemented in dozens of possible ways with future technology (using some form of machine learning).