There has to a be a limit to the amount of data that can be taken from what is provided to improve the effectiveness of the suggestions, I'd say there close to

There has to a be a limit to the amount of data that can be taken from what is provided to improve the effectiveness of the suggestions, I'd say there close to the point in which techniques to make sense of the data have reached there limit. The system can only be effective to a point because of the unpredictability of a user.