as, athat as long lunchtime, i'm looking for a place where i can plug in my iphone, which happens even today. theong as this happens, time of the oil industry is not finished. in my view, and i said this to the students of john hopkins university last year. when your iphone will last a couple of weeks, the battery, then you should short oil stocks. not more. francine: but that could take 10 to 15 years. paolo: nobody knows. we need to replace the bathroom windows, the ion lithium batteries, invented in the -- battery windows, the ion lithium batteries -- the time of renewables is not the time in which renewables will replace oil. francine: do you worry about underinvestment in the oil industry in preparation for renewables? paolo: that's exactly the issue. what is happening today as we have an oil price, and i think this will stay as it is for the next three or four years. every time the oil price moves up, shale oil in america will act as a kind of ceiling. barrel will be the price for a few years. then the lack of investment might push prices higher, even or 100region of $90 dollars,