An African American assassin has no brain as the government wipes it after each hit he pulls. His family travels through time and adopts him.  

It's the future, you should not be so shocked at products like this.

Seriously, have you seen what they've done to chicken in America? The chicken we eat is not the chicken your grandpa ate. Is that a bad thing? I don't know, but your grandpa is not an immortal because he died well before you happened upon this little pothole in the space/time continuum.

On the other hand, once you've read the book, the ever increasing number of immortals will approach a critical mass that pulls the Earth back through time until the time it was last time. None of that makes sense, but it is all clear as crystals pivoting under lasers once you've read the immortal book.

Life Begins, a tale about where the Tecnological Singularity meets the Simulacra and Simulation

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