mapping would take in both an image from source domain as well as a random noise source however this is not enough to just change your architecture because if you changed if you even if you change your architecture the noise are doomed to be ignored and to see that the reason is essentially our lost function the l1 law the l1 cycle consistence loss carry to do the following so if my map my a with certain Z this this produce like some kind of B for me and then if I met my be with another Z Prime I should get back to a and we can see