still if ego wasn't change tell me if you identify yourself as the same person you were yesterday. i'm not talking about drastic change. i'm talking about cumulative change. your past lives within you and your present adds to it. with experience your ego is influenced. that is why you can have an ego death and develop a new one little by little. that is why you can inflate it. if you can inflate it it means you made it bigger, if it's bigger it's different from before, therefore it changed. when you try to killl your ego and not succeed, from my experience, you don't go back to being the same person, but you change in attitude as well, you have learn't a lession and you hav been humbled, isn't that change?
and i beleive that ego can change wether you are aware of it or not.