the platform actually designs you know designs it's it's topology I think that's I think that's a really interesting direction of work it's something sedan I've talked about we haven't really done much with it yet and find the last thing I'll mention is the objective function I'm going to focus on is is throughput the rate of completed rides there's at least three objectives that you you know might care about there's throughput there's profit and then there's welfare so we we have results for throughput that sort of have no