approval, davinci robotics. what has it done to surgery and what does it mean to say we have robotic surgery? doesn't mean we sort of let a machine do all the work. we still have people, right surgeons that are using these tools to actually do invasive surgeries. >> yes, that's right. you have a surgeon doing a surgery, and the tool that they are using is this telemanipulator, this davinci robot. it is allowing them to do instead of if you think of traditional surgery opening the patients enough to get your hands up, you don't want an incision big enough for me to put this in, but if instead, you can do a small incision and put a small instrument through then we're only having to make incisions about this big in order to get everything that is the capability of the hands inside. >> the advantage of that is what? it seems self evident you have less scar tissue, less area to potentially in effect and all kinds of unintended consequences and you're able to be more precise in terms of the literal the operation itsel