Ans (3) : I think it makes sense that an interactive system should not be giving back the same response on all 365 days of a year. I would say that's just simply repetition! However, I don't think there's any system yet so advanced where the behaviour of any system is almost human like (which I see as very flexible and adaaptive to different situations). Hence, no matter how different the behaviour can be, the set of possibilities is still restricted by what the media designer added into the system. So in a sense it's still consistent as the system can only give this much of response or display so much difference. The slight difference is that this consistency is coming out randomly.