those yellow boxes and the yellow boxes are these projection heads so in the original seem clear paper what they did was they they wanted originally they wanted to train this network right here this is like a ResNet 50 it's pretty standard in these kind of self supervised approaches and so on to train or these few label approaches to train a standardized network and this is like a ResNet 50 so in the original sim clear paper they said we want to make ResNet 50 as strong as possible but in order to do this loss