that's not just liesel's prevention.we have the health innovation, we also have health cost containment. in some ways interestingly enough, what i find is the -- i'll be careful how i say this to my boss. the silos exist even in a small organization like bcp are the same silos that exist outside. how do you integrate prevention, health care cost technology? we're going a great job of integrating here but i want to say it's a small microcosm of what i see outside as we go through these activities. >> i'm dave morgan. i'm visiting from the united kingdom. we have a national health service and they're delivering programs that identify people at particular risks, share information, encourage doctors to focus on at-risk patients but i walk across my own parking lot to my own doctors, there are heavily discounted candy, major manufacturer advertisers, the joy of eating lots of chocolate. heavily discounted alcohol and even diet foods with very high levels of sugar. could i ask, what is the evidence and how do you measure how m