just this is a an augmentation they do on top of their idea this is not the core idea so okay but now the second time this sample comes up from the training set we decide on a different order so the order here is 2 4 3 1 now again we're asked to predict x3 and we're allowed to look at everything before it so 2 & 4 as you see here there are weights from x2 and x4 into this column that finally is then 8 asked to predict x3 so this is also this is now an easier task right you're allowed to look at the word to the left and to the