Robots could never be like us.

In response to your point that consciousness is created by chemicals. You are simply explaining the physical aspect of consciousness, but how exactly does this translate to consciousness? Chemicals can influence the way we feel but I do not think they can explain how it feels to be in such a state, how to create a self-consciousness. Furthermore, chemicals only effect the way you already are, just like drugs effect personality, but there needs to be something there to effect. Furthermore, you are conscious of feeling happier for instance under the existence of drugs, I hold that chemicals like dopamine do not make up consciousness but that they 'colour' it, they can effect the way it seems to us. However, despite the changes in dopamine levels there is a constant self consciousness that lasts. I do not think that what you have postulated could explain that. Yes I believe love is both magical and special and would continue to do so even if it could be replicated in robots. Whatever creates it love is certainly one of the great things about being alive. As to its origin, I just believe that science could not explain it and then replicate it in robots. Its cause is not magical or special it is just not discoverable through science. It is mysterious because we cannot find a cause for it. You argue that computers work in a similar way to our brains because memory (data) is being processed. However, consider this argument against robots having the same level of understanding as humans. I could just manipulate symbols to make it look like I possessed understanding just as a computer that appears very clever does. However, it does not follow that I have understanding. For instance, I, being an English speaker, not knowing Chinese, could be confined to a room and given a rule book showing how to put some Chinese symbols into strings of sentences. Having become very good at doing so, it may appear to someone outside the room that I understand Chinese. In reality I am just very adept at manipulating symbols and don't understand what I am actually saying. The same problem, I argue would apply to our incapability of building robots capable of understanding. I completely agree that a nervous system and senses could be created and used by robots. However, I do not think they would have understanding that they are using them, for what purpose and they won't have knowledge in the same way we do (first person, subjective) that they are using them. I do not dispute that colours are just an illusion but it is an important illusion created through evolution as certain colours inspire certain feelings in us, such as red excites us. It is a creation of the human mind which helps us survive. However, what I am arguing is not that a robot could not have an experience of red but that it would be incapable of knowing what it was like to have that experience and that it alone was experiencing that experience. Of course a robot could convert certain electromagnetic frequencies into certain colours and then say to itself 'red=danger=run'. There is something more about your experience of red though. a knowledge that you are the one experiencing it and this is what this electromagnetic frequency looks like to my self-conscious self.