Training is the process of regressing to the mean with respect to the given data. It's no surprise that it wears away sharp corners and inappropriately fills recesses of collective knowledge in the act of its reproduction.
There is no reason that must be; it could be better than the sum of its parts by taking the best part of each. Humans can do that.
There is no reason that must be; it could be better than the sum of its parts by taking the best part of each. Humans can do that.