According to Freud, one of the three parts of the personality studied in psychoanalysis is applicable in this case. The part of the personality which belongs to the conscious, and which will help Fabian to partially satisfy both desires is <em>ego</em>. The ego is a part of the identity that considers one' self, it represents a process of conscious decision-making, and is responsible for testing reality, what is possible to what extent, and what not.
Because they are people just like us and who they love doesn't matter. They didn't even choose it for themselves so why wouldn't we treat them equally.
The baby is displaying a behavior of habituation in which a
person who shows habituation likely shows disinterest to a certain condition or
he or she likely no longer responds or has stopped responding to a certain
condition or stimulus in which the baby displays.