Alright guys. I've been thinking about this for a while. If we were to somehow genetically engineer skin so it has the same properties of that of a plant, that is to say, be able to convert sunlight into sugars and therefore energy, how would it work. What I mean is that, if we were to do this, we would have to remove our stomachs because having 2 energy sources is pointless, and plus, we wouldn't be eating food due to energy being created by our skin, causing our stomach to consume ourselves. Furthermore, how would this change the structure of the rest of the body? The brain? The torso? The spine?