It always amuses me how rapidly discussions about life (define life, what constitutes a different species or organism) end up at ancient philosophical discussio

It always amuses me how rapidly discussions about life (define life, what constitutes a different species or organism) end up at ancient philosophical discussions. In this case: https://en.wikipedia.org/wiki/Ship_of_Theseus https://en.wikipedia.org/wiki/Ship_of_Theseus is just a breath away! (In this case: would those cells be a billion or two years old? Have all of their atoms been replaced at this point? Does it matter?)