who'da stop gradient on the key encoder you're not going to back probe through the momentum encoder and now you're computing the logits of the positives which is you have the same mini batch so you constructed or different augmentations for the same image so that means that the Pirates products of the corresponding batch indices like if you have a batch of 16 images and you created another batch of 16 images every particular index is basically another augmentation of itself so you can actually take the paralyzed or product