bottle cause a lot of motorcycles okay Oh about 10 15 years ago deciding Andrew McCollum Tom Mitchell or maybe even others before them start to talk about semi-supervised learning the idea of using unlabeled data and that was exciting but in semi-supervised learning as is simply conceived um you know the ability to use unlabeled data is great but in semi supervised learning typically the unlabeled data is all images or causing over cycles and it turns out that this is a semi-supervised learning this sort of model is not