https://en.wikipedia.org/wiki/The_Positronic_Man Only when Andrew allows his positronic brain to "decay", thereby willfully abandoning his immortality, is he declared a human being. https://en.wikipedia.org/wiki/Bicentennial_Man_(film) . He petitions the World Congress to recognize him as human, which would allow him and Portia to be legally married, but is rejected; the Speaker of the Congress explains that society can tolerate an everlasting machine, but argues that an immortal human would create too much jealousy and anger. Andrew works with Burns to introduce blood into his system, thereby allowing him to age, and thus he begins to grow old alongside Portia....[only then, later] Speaker of the World Congress announces on television the court's decision: that Andrew is officially recognized as human...


  • previously (impossible|"not possible") (physicist|physics) (google search) https://phys.org/news/2017-03-crystals-envisioned-princeton-scientists.html