benchmark was 48 percent and now it's seventy six point five percent so this rapid advance has been made in multiple labs because of this mode of learning called contrast to learning and contrast the learning task can be simply summarize this a dictionary lookup task and there are two ways to do this pretext contrasted learning which is you either build it as a predictive coding task or you build it as an instance discrimination task and in predictive coding you have multiple mechanisms to do that once you either used end-to-end