Yeah, they change alot. But change doesn't necessarily mean the old person died.
You keep talking about great change, but not explaining why you think that is comparable to death of the old person.
I agree there can be great change of personality in life, but I'm not sure that means the old person is dead. And I'm still not sure if you're talking about that, or the psychological identity of a personality.
You seem to assume that significant change is personality means a different person. I'd say it's reasonable to say that the different personalities are connected by slow change over time. It's not that the old person dies and a new old appears, the old personalities changes into the new old.
eg: Imagine a sphere turning into a cube. The shape (personality) may change, but the substance is the same.
Perhaps I'm wrong, but I think the different personalities being connected makes them the same thing which has changed.
I wouldn't say they are the same person, even in the first moment.
Consider making a copy, but the original doesn't die. Obviously the copy is a different person from the original. They are separate entities. Death of the original doesn't change the fact that a new entity is brought into existence.
I'm not the same person from 5 minutes ago, in the sense of not being an exactly copy of myself 5 minutes ago. But I wouldn't say that makes me a different person in the sense I mean.
If people are dying each second, is murder immoral? It really makes no difference because according to you, people don't exist for more than a second anyway.
I don't think this has all that much to do with what I'm talking about. Do you have no friends because you can't know someone for more than one second?
I don't think change means the person isn't the same person.
I think you need to argue why what you're saying is the same as what I am. You seem to be assuming I'll just agree if your point out change, and that I'm not exactly the same as a second ago.
I'm not perfectly the same as a second ago, but I'd say I'm the same person. If someone is the same is more broad and fuzzy.