patrick tucker, editor at large in magazine the futureist, which we worry? >> robots can become more dangerous, as we ask them to do more and more things. and i think that armed drones actually presents a great opportunity to talk about that. we think of drones now as they flyover foreign countries, they do the work of our military, and they decrease cost of military involvement but by the year, en of year 2015 we'll have 30,000 drones, they are unarmed but circleing over u.s. and doing work of police department, and survey length. are they capable of ain't social behavior? of executeing tasks that have a cost to human life and health, i think absolutely. john: what do you mean? i could of them as operated by people. >> drones right now are operated by people, a key interest of military right now, is incremently increasing the level of autonomy in these systems, that is a huge cost safer for them, the more they do -- their own less it costs to run them, we're making them more and more capable, and -- >> as with computer watson, soon started teaching itself.