My answer to the original question is yes, I do believe that digital organisms have entered the realm of what I consider to be living, albeit very simplistic.
I do believe that we are the sum of our parts. For example, there was a video (which I cant find right now) that demonstrated when the pathway between the facial recognition part of the brain and the reward system in the brain (to put it simple terms) is severed the person will not be able to visually recognize people for who they are. They can still recognize faces, but for example, if their mother comes in their room, although the woman in the room looks and sounds and acts like their mother they will claim with no uncertainty that their mother is an impostor of their mother. In other words, the neurons which the brain expects to fire when it recognizes the face of its mother do not, hence the brain refuses to believe that this person is their mother. When a part is removed there is no safety system in our head saying "oh crap, thats my mom but the sensory input does not say reaffirm this so I need to fix this", no, instead it continues on as if there was no sensory input and makes up excuses as to why the image of this person does not provoke the right input i.e. They are an impostor.
The point I am trying to make with this is that we are able to emulate parts of the brain, such as facial recognition, voice recognition etc but we are still lacking the parts which tie these together to make something that falls under the category of being alive. Even the smallest disruption in the brain can cause adverse effects on the other working systems which is why computers are not capable yet of surpassing our functionality, we simply don't know how to connect the parts yet to make a working system, but we have some of the parts.
The reason AI bots such as the chat bots grasshoppa mentioned seemed stupid is because that is literally how they were programmed to be. Being a programmer myself I would look at the problem and say there are only so many things someone can say, and there are only so many responses so we will start building a system that reacts based on certain criteria because that is the fastest way. But that is not to say that computers cannot comprehend conversation as we do, it just takes them a long time to learn it just as we do. Hell, my mind is 20 years in the making and I am still pretty ignorant by many standards. It took me 4 years of life before I could read, and that is when I already had the right systems (eyes, brain) to be able to learn that. However computers are not at that point yet, they don't have all the necessary systems for flawless learning yet, but when they do, they will be able to be programmed in such a way where they can know nothing, but be able to learn from its inputs as time goes on. So in the mean time we make crude representations of these inputs to which the lacking computer can make some sort of judgment upon.
Originally Posted by grasshoppa
"To think we can build robots complex enough to attain consciousness at our level and even surpass us is ludicrous. I mean, at best we create a robot that can continually upgrade itself and store more and more information on it's database."
Couldnt you say the same thing about humans? I mean, at be we create a baby that can continually grow and store more and more information in its brain.
I highly suggest you view this short clip from a documentary to see just how far we have come. There are some unrelated topics discussed but many are discussing the topic of this thread such as the development of a chip which replaces parts of a brain.
http://www.youtube.com/watch?v=ZShORepzB-g
I think this discussion could be summed up by the following statement taken from that documentary:
"At first we said if a computer could play chess then it would think like us, and then we got a computer to play chess and we said thats not really thinking. And the answer is we don't really know what thinking is. I would argue right now that machines do a pretty good job at thinking. They don't do as good a job at creating although we don't really know what creating is. And they don't do a very good job at having a soul, but we don't really know what a soul is. But when we can define it, they do a pretty good job at doing it."
Oh by the way A, T, G, C. Those are the distinct "symbols" which make up our DNA which is the code to how our bodies are formed. 0, 1. Those are the distinct symbols which make up every computer program which is how the program knows what to do. So we humans only have 2 more symbols that dictate how things are supposed to be arranged, vast difference eh?
We are simply not at the point and time for AI to be a replica of ourselves, but we are not far away.
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