If I purchase a biological supercomputer, how long does it take for normal cell death to render it ineffective?  Humans have a planned obsolescence of around 80 years but a (large) dog only lives for about 10 years.  I guess in some ways this is no different from electronics manufacturers gluing their computers&#x2F;tablets&#x2F;phones together (or building them with non-replaceable batteries) but I&#x27;m opposed to that trend as well.