Saint Iota: Is there a tipping point, for our "self"?

Saint Mu: HUH?

Saint Iota: You know, how much can you replace before you stop being "you"?

Saint Mu: That's dumb, you can't stop being you. You're ALWAYS you.

Saint Iota: Even if you change so much, you're not like the way you were anymore? If you can't even recognize yourself? If you... can't even remember why you were that way...?

Saint Mu: Yeah, still "you". What, someone else is going to think your thoughts? Eat your food? How would that even work!