people assayed big data in throw that out there. hugh need to be shown why and how that's agrees it's you in the ways that you know, are true but having said that the example of how algorithms ironic we'll want to throw out that just imagine we had a really good big data algorithm, even if we did in ricans predict the future well, that is not necessarily a good thing in repeat will go wrong that in the hands uh your doctor for but of an insurance company who can charge you more that is terrible and finally imagine in the hands of wal-mart the employer can decide to tire or not because of the future insurance cost? that would be very bad. so there is no guarantee even if the algorithm is accurate. >> so those of algorithms terrify me so we just published a paper looking at people who are going to alcoholics anonymous there are clear profiles from before they start going to aa and can predict if 85 percent accuracy if they will stay sober looking at women in their twitter accounts according to produce seed in on-again their birth they