Ok, it's useless because nobody disagrees with it. Fair enough.
And you are right in that our ideas of "personal identity" are vastly different. But to be honest, my ideas are dynamic, since I have no illusons about being fully educated or learned. I must make allowances for adaptation to new ideas, and for the eventuality that what I think is just wrong.
So my definition of "personal identity" may vary from time to time, even though the core of the idea stays the same.
And I thought I was crazy!
stuh
If you thought that you're probably not..