right so you create two slightly different variants of that image through augmentation and again this can be something like a random crop it can be a horizontal flip randomly you color jitter you Solarize you blur and so on there are all these variants of data augmentation and the fact that down the line that the representation of these two things has to be close to each other I think these random these augmentations here are responsible what the to make the to make the these augmentations are responsible to make the representations