Tobias: When I look at Robinhood, I think that there are two issues. One is that, we don't necessarily know what's happening to that order flow and it might be front run or used in some other way. But if ultimately that allows you to trade more cheaply and in a more illiquid stocks, more easily, then it's probably a good thing. The other problem, which I think is possibly the bigger problem with Robinhood is the gamification if you like all the experience from the perspective of a user when there's a lot of– They've imported those Silicon Valley's social media dopamine hacking elements that make you want to do things on the site. You get confetti going off, and they simplify an option trade even for experienced investors is a reasonably complex thing.