their layers look like so you have the input you have some computation and then you have the output and then there is already a residual connection that basically adds the original signal together to the result of the computation so all you do in this stochastic layer dropout or this stochastic depth right here is you basically disable use you disable this connection right here and all the signal has to flow through here if you read the residual the resnet original resnet paper they make it pretty clear why the residual connection is a good