I think one problem with the idea of the 'zygote machine' is that it leaves out the fact that zygote machines only make brains in the environment of the womb, w

I think one problem with the idea of the 'zygote machine' is that it leaves out the fact that zygote machines only make brains in the environment of the womb, which is an environment controlled by the whole system of another human being. Can we concretely say that a zygote machine has enough information about making a human body (and brain) that it can reliably do it without hormonal signals from the brain of the mother? If not, then the size of the genome is irrelevant -- a nontrivial amount of information could potentially be being passed on by the gestation process itself, and that may indeed involve trillions of lines of code.