Thinking about the interface, the experience, what is the limit?

As I keep thinking, I realize that my idea is becoming a mixture and a cluster of too many things so that it gets not clear. I should free my limit or boundary, but should make a frame of the way how my ideas would flow through.
I need to cut off stuffs now, and concentrate more on one strong theme. I want everything to be simple and coherent. I do not want to put too much of settings. I want to make my interface as minimal as I can.

Whatever I do, I will be drawing generative images that can be considered alive. What I am not sure is how much interactive I will make them to be, and what will the interaction or the interface , input be. Also, what I should think is what and how to display. It does not necessarily have to be interacting with human, it does not necessarily have to be showing the interaction in real time. I can even utilize real alive amoeba or the data of the nature as the data of interaction. I can just show the result of the diary afterward. It can be only just a screen projection or a set of monitors. This setting makes me more free.

I am interested in replicating the nature visually within coding and randomness. Also, I am interested in putting metaphors within my work, such as communication of the visitor's emotion, because somehow I want the interaction to be meaningful. I also want to be able to configure shapes and build up my algorithm of drawing shapes. I think I can make them to become all 1, such as make the emotions feed in to the virtual world and make creatures grow by eating them. But I am not clear yet of how to make it more interesting and fun, and artistic. I think I should not make what things happen to direct or apparent. Maybe filter it to be abstract, yet beautiful. I want the images to be ephemeral and organic, yet structured. I should draw some images to think of the scenes of the metamorphoses.

This might sound stupid but what I am not clear enough and would like to think more is how do I define something to be "alive". It should know what it is doing, what is going on outside, and it should be doing something responding to the current stage of circumstance. Also, it should have the possibility to die, which means it should somehow have random reactions that might screw up everything. It is because death makes existence and life more precious.