system all right everybody okay with that so basically what I'm saying is that there's like a natural notion of available supply and available demand and I can use that to say that if what I want to do is maximize throughput then the multiplier would pick is the one balances the two of them it's pretty intuitive it's just nice to get that out of the out of out of the primitives so I'll skip this slide I just said that so now let's talk about dynamic pricing and what we did is we decided to focus on a particular family of dynamic pricing