Ah, Well Done! Apparantly no one cared much for the ending (No one has said anything for a while), great series imo, I'm glad I picked it up.

I think Solty was,as it was said, just another AI sent to help out, it's just that she was more of a human relations type than the other too. It's interesting that all these AI's were so good they managed to anthropomorphize (take on human qualities, look it up it's a real word!). Unfortunately only Solty was able to get past solipsism (the idea that nothing exists other than yourself and your ideas are the only possible correct actions to be taken). Helen and Eunomia maintained their solipsism to the end, as babies probobly would if they were left to their own devices and were somehow able to survive to adulthood.

It was likely the love Solty recieved from Roy and the rest that made her mature from essentially a baby into an adult in the same way that humans do, through experiance and guidance from parents, friends, and the world. I think the depth of Solty's charachter progression, especially near the end was a great touch to show that a 'person' is the sum of experiances, thoughts, and feelings, processed and reacted to by an appropriate medium, be it man or machine. Man, I haven't thought this much in a while, maybe I should go watch some Azumanga Daioh to calm my burning neurons. Someone please post if those DVD extra eps come out!