Humanism: What defines us as Humans?

One of the most interesting conversations that we had in class was whether Koko, the gorilla who can use sign language to communicate, Genie, a child who cannot communicate fluently, or Robbie, a robot who is fluent in speaking languages such as English, is more human than the others.  Many would define human as Homo sapiens.  From a biological and physiological standpoint, anyone who is classified under the genus Homo sapiens is a human while anyone out of this category is not a human.  Therefore, Genie would be the most human because Koko and Robbie do not fall under this category.  However, looking at a philosophical standpoint, Genie may not be very human.  We went over in class about how human = biology + communication.  From this standpoint, none of them are human because Koko and Robbie aren't biologically Homo sapiens and Genie cannot communicate.  But the definition of Humans is skewed to official definitions and definitions that other people created for us to which we may not agree with.  From a biological standpoint, I would agree that Genie would be the most human.  There's something else though that makes us Human though, our way to rationalize and our ways to feel emotion and communicate.  We can do so much more than other animals such as fish, birds, and insects, not to mention most mammals.  Humans can love, hate, anger, think, and do so much more.  I believe that yes, biology is important to describing someone as human but things can be described as emotionally human.  Robbie, the robot, could emotionalize sadness, love, and heroism.  He could express so many emotions and still think rationally and communicate.  Koko could also do the same.  Koko could communicate through sign language, think, and is a carbon based life form, something that Robbie is not.  Although Koko does not fall under the genus Homo sapiens, it's widely recognized by many that we Homo sapiens evolved from apes which are related to gorillas.  Although none of them are really Human, I do believe that they are in a sense somewhat Human or not human with humanistic qualities.  Genie is a Human biologically but can't communicate, Koko isn't a Homo sapien but can communicate and is related genetically to Homo sapiens, and Robbie is not a carbon-based life form but can communicate and has many of the emotional aspects that we humans have.  Therefore, none of them are more human than the other but are all somewhat human.