We cannot get the full code. We can never outsmart millions of years of evolution.<br>Every embryo has a DNA which is actually an instruction for cells how to divide and what to become. It’s so sophisticated and fine tuned that if there is too much or too little of those instructions ( extra chromosome, or lack) then the baby will have deformities , many times in many parts of the body.<br>Early development is very complex, there are chemical reactions, electric impulses, mechanical changes. And it’s done in a chain reaction manner. <br>Everything happens one by one. Every time.<br>If by chance one step is not complete and something has not formed, it will not form later on.<br>Every organ has its specific time for development. <br>We can try and use our stem cells in order to repair a damaged tissue or grow organs, but the brain is so complex that I doubt it’s possible.<br>When brain develops it not only develop the brain in the scull but also nerves which like roots go through entire body. You cannot separate the brain from the nerves system.<br>It’s all one.<br>That’s why it’s so difficult to grow the full brain in the lab. <br>May be they should try creating a matrix of cells and grow brain cells along with other tissue so it progresses into more development . I feel those organoids are small because at some points it needs to connect its nerves to other tissues but there is no way so the sequence stops.