The First Step on Congestion Control

Exchanges want a single root transaction with a single output that they'll bump and bump and bump until it gets confirmed in a block. That will be the most fee efficient thing for them to do. And this is incentive compatible. So, if you have two different groups of users who want to pay different rates, you can't put those in the same transaction because transactions only y. This is sort of building some intuition for our saying its a bug,. bitcoin outputs that have different priorities can't go in the same transfer unless you want to overpay for half of them rat so now you could imagine there's another layer that fans out into ten different buckets for different service level agreements.