the symbol so that's that and so the local civil rhythm says to just write down the time that the the write down the time that it that you have to look back to find the same symbol again so that's going to take log t bits where T is the time so on average it's just log log T bits which is log 1 over P of X so you can see that this goes to the entropy of the source so this is an interesting algorithm it's basically nearest neighbors and it's saying that if you run if you just memorize tons of data over time and you run nearest