evidence that distribution shift because these are these are iid evidence here is that the distribution shift is really what's causing us to be ok I'll stop there um oh sorry the most important slide of course is that you because no one day right the data set to make all data sets and we see Leon Batu wrote this beautiful oral history of the M this data set and also managed to reconstruct a bunch more examples and it's very nice fun read and again we see the distribution shift again between these two tests we were doing accuracy