procedures and this is something that we just can't do yet in our models if you take an image a resonate 50 right right now we do one forward propagation to get a label in this procedure if you had two back propagate through the optimization procedure for each sample you would need to basically back propagate through 50 forward passes of the resonate if you if your optimization procedure is 50 steps long and that is just not feasible right now so that's why we don't do it but I believe maybe once we find a smart way