[ WP ] In the future , every human born lives for exactly 1 billion heartbeats . Some go to extreme lengths to keep their heart rate low .

`` 28 years of life. That is what all humans had. It's hard to wrap your heads around it. 
 
 Only 28 years. For all of human history, 28 years was the maximum any human ever had, as our own hearts counted up to a billion and then just failed. All believed that nothing could change that. We were destined to live short, brutish lives.'' 
 
 However, all it took was for one doctor to work with his own plumbing to save us all. 
 
 Doctor Ken Harrison was simply unclogging his sink, when it hit him. The heart is just a pump connected to pipes, pushing a liquid through the body. 
 
 300 years ago, he invented the first artificial heart. He celebrated his 30th birthday. Then his 40th. Then past two hundred. 
 
 No one really is sure how long we can naturally last now that we are not tied to a timer. Maybe we are immortal, maybe there is another clock we have n't found yet. 
 
 But that's philosophy, not history. If you want supposition, your in the wrong class. Now who can name Ken's first prototype?''
