why is that a missingash, boa ingredient? what must happen before we see the acceleration quick. >> that was higher before the oil price and the decline of the price of whale which not coincidentally is to leveleclino of production of shale in is marginal. of the capital goods needed to expand production. we lost a lot of investment from shale production with the price of oil but overeded t and above that they're sitting on a wad of cash from the united states and there is the air of uncertainty in the situationabot that is not encouraging of investment if you say animal spirits are not there and people are not excited about the growth prospects that has to do with productivity and invention when you get pessimistic than look at what happened at the nobel prize to days in a row one day give the prize for those properties that matter then the next day they get a prize to be able to design machines at the molecular level. summer 25 years from now we will be aware of these again . but what will it take to janet - - generate from