this encoding scheme imagine we have two modes this is P and you see P is running over here and both in those two modes when we use a scheme above effectively what we're doing is we're fitting the distribution queue to our to our original situation and we're encoding based on cue because editing the falls on this side will use mode one everything calls and that's how we'll use mode two and this is not the same as P it's different and will pay the price will pay the KL between the two in extra bits now I might say do we care do I