grad hypothesis and what this is the hypothesis basically states that the brain could implement something like neural networks by using by using an approximate backdrop like algorithm based on autoencoders and I want to jump straight into the algorithm no actually first they do talk about autoencoders which which I find very interesting so if you think of autoencoders what is an autoencoder an autoencoder is a network that basically starts out with an input layer and then has a bunch of hidden layers and at the end it tries to