. >> the interesting thing about tech is that bob blendon at harvard business school during a survey of experts actually asking the questions what are the factors that drive health. the experts will overestimate by a factor of two to technology and personal care by a factor of two to three. so we as human beings want to believe we are in personal control of our mortality when in fact, we need to collectively work on factors. those are far more important than we would estimate. now, having said that, we've got a lot of apps and technology that we are deploying to help motivate people to change their behaviors. but the science isn't in on that. we have a lot of faith in terms of doing that. and our research unit is conducting studies whether there is in some of that. on others, in terms of workplace wellness, we have some good data about impact for companies and productivity. >> are the companies that use those, the monitors, fitness trackers, exercising and playing soccer anyway? or do we know whether it is is making people do more or they are just enjoying tracking what they would be