Here’s something to ponder: If you had your memories removed, then lived a number of years as an essentially new person, then had your previous life’s memories restored, what would that be like? Which set of memories would “come first” when you thought back on your life? Would it be the most recent life, or the most distant life even though you only remembered it after you’d already lived a wholly different life?
As George Carlin once joked, “These are the thoughts that kept me out of the really good schools.” Heh.