paul and michael have written "the age of the cryptocurrency." good too see you both. >> welcome. >> kelly evansw are you? >> yes, everybody come back together from "the wall street journal." >> yes. >> it's been a novelty. it's made big headlines around the world, but it's been dismissed as merely a temporary situation, but you guys seem to be suggesting we're in this for the long haul with some kind of a cryptocurrency. >> the way we came together is we sit eight feet away from each other and we'd write about this and talk about it all day and we were doubters too, when we first started. first time someone suggested we should write about, it i thought, no, i thought the same thing. it's a scam, a flash in the pan. >> i really expected you to be a hater, paul. >> you would, because i'm such a luddite, right? >> no it seems like the volatility in the price of bitcoin -- it's collapsed this year. why do you think long term it will be viable. >> the more we wrote about it and the more we talked about it the more we started pondering it and mulling it. you really do start to see it, there is someth