The Birth Certificate is NOT "the person".
It is only a document that defines that "the person" was created as a legal fiction.
Waving a BC around and saying "This is the Legal Fiction thing" is not true. It's the same thing as saying "You ARE Your Name".
John Harris has never thought ANYTHING through. NOT A SINGLE THING. All he has ever done is pepper a load of half-baked stuff around, like pellets from a shot gun.