these types of matching markets Eric bhootish and Eduardo Acevedo have a really nice paper that sort of talks about some of the things that you can do using this type of approach so in our case the the limiting approach that we use is that we have a sequence of systems we consider in the end system I'm basically scaling up the exogenous rates the arrival rates of passengers and of drivers and in the end system I have some pricing policy that's actually indexed by in okay and I'll talk to you a little bit about how that how that