Uh...right. So, model numbers were created when people started manufacturing items in bulk, yeah? When you make a lot of...daggers for instance, use the same shape and whatnot, but different materials of different qualities, you assign each different series, or daggers with the same attributes, a model number. That way you know which is which, even if they look the same. They may be completely different things.

What if we all have one series of implant and the older residents have another. What if those different series can be used separately to influence us?