know very nicely put together as a more inspiring slide by young Nicole and it's often referred to as the lake which we saw in the introduction to the class which is you can think of self supervised learning as the cake if intelligence of the cake you can think of sociable as learning as the cake and you can think of supervised learning as the icing on the cake and you can think of reinforcement learning as the cherry on the cake and there the argument is that most of the useful bits can come from doing really hard pretext asks just