system that has written variables and all that stuff to predict the next frame so Z Z we represent all the stuff you can predict that the other cars are gonna do essentially right oh I see it's that's a good question I think it's I think is 256 dimension vector of 206 dimensions so this is so for inference you need to kind of sample z4 for training Z is given to you by by an encoder basically right you train but you need one of those information capacity reduction here which in our case is done by a combination of adding noise and what we