Want me to explain how that exists in compounding changes dumbed down to series parallel singular events? you first arrived a fertilized cell created by the combined previous generations of your ancestral lineage, so last to arrive first to be adding another generation of great great grandchildren again.
that simple. Completely accurate, self evident in real time you have lived since rotation of your conception daily never same total sum again even in this rotation forward here.
I can account for every lifetime as specifically existed or existing today. How they behaved since birth is on them for personally ignoring how their own body never stays what it was daily. Always living eternally separated each rotation here now. Universal constant.