where now the error if you look at what is the error here the error is the difference between this and this and the difference between this and this and the difference between this and this right and you can train an autoencoder simply by saying W please make sure that the that the the the input here gets mapped closer to the output and to be the same thing this will become clear in a second so but basically sorry this I mean the the hidden representations you'll see basically the idea is that you can train an autoencoder only by