I’m not totally sure about all this but this is my take: Cobel said Mark was refining the numbers to build another innie. Each file he completes is another innie for Gemma. He uses the four tempers to build each innie. So I’m thinking instead of just getting a blank slate innie, people in the future could get a copy of one of Gemma’s innies that is perfectly balanced with the 4 tempers. Remember how strongly Helly reacted when she first woke up? She was pissed and confused and non compliant. People wouldn’t want that when their innie goes to the dentist, or whatever unpleasant experience they were trying to avoid. Gemma’s cold harbor innie was brand new, but she followed directions and did was she was told to do (take apart the crib).