Stop, Dave is a disembodied voice, that gives the impression of being a sentient intelligence. It tries to provoke emotion in it’s human companion by the words it uses, “I feel’, “I assure you”, “I honestly think”, but there is no feeling behind the words, they are uttered in a monotone. It is easy for the human to ignore them.

Gumdrop on the other hand is clearly a robot in appearance yet speaks in a very human like way about her experiences and life. She appears to relate to humans in many ways, and her dream sequences show her interacting with humans as though she were human.  In fact, everything about the interview process shows her being treated as an equal to a human, there is no differentiation.