Vincent was at a low point as he was trying to wrap his head around the best way to try to train a vampire. In the settlement they had schools to teach all basics, and then, they would be mentored by teachers and so on.
The problem was, how could a turned vampire compete with all that. Yes, the vampire would be different and stronger than most. This was because of him, Vincent a vampire leader had put all of his powers into a single source. Meaning it would be transferred over to the other person.
But, if a human was suddenly able to get that much power in an instant and didn't know about the consequences of such power, then perhaps he too would eventually become someone who was against humanity and not with humanity.
At that point and time, a colleague that was at the science lab had come to help him. Vincent never explained his problems fully but explained a scenario that would be similar to his current situation, and in the end the colleague had come up with an idea.