Cancer is certainly a dreaded condition. And this approach – targeting cancer cells with intelligent nanobots that recognize protein signatures and release the right drug in response – could certainly help provide a more beneficial treatment alternative. But what does the payload actually contain, and how accurate is the targeting mechanism? Creating an auto immune condition certainly wouldn't be nice.
Or more importantly, how certain are we that the bots are safe, robust enough to avoid self destruction and remaining non manipulated during therapy, and exiting the body after therapy?