extract useful information from the from the observation space right so how do we do this this is Q here is supposed to be exactly that it's supposed to be a good representation but not one that we handcrafted but a used with a technique that can be employed pretty much everywhere and the goal sorry that the secret sauce here is this contrastive loss thing okay this bombed contrastive learning is this this kind of magic thing that will make us good representations so what is contrastive learning in this case I'm