As cloning beautifully proves, our cells retain their youthful digital information even when we are old. To become young again, we just need to find … - David A. Sinclair

Analog data are superior for this job because they can be changed back and forth with relative ease whenever the environment within or outside the cell demands it, and they can store an almost unlimited number of possible values, even in response to conditions that have never been encountered before.25 The unlimited number of possible values is why many audiophiles still prefer the rich sounds of analog storage systems. But even though analog devices have their advantages, they have a major disadvantage. In fact, it's the reason we've moved from analog to digital. Unlike digital, analog information degrades over time — falling victim to the conspiring forces of magnetic fields, gravity, cosmic rays, and oxygen. Worse still, information is lost as it's copied. No one was more acutely disturbed by the problem of information loss than Claude Shannon, an electrical engineer from the Massachusetts Institute of Technology (MIT) in Boston.

The first principle is that you must not fool yourself — and you are the easiest person to fool." R. P. Feynman,

In 2003, Michael McBurney from the University of Ottawa in Canada discovered that mouse embryos manipulated to be unable to produce one of the seven sirtuin enzymes, SIRT1, couldn't last past the fourteenth day of development — about two-thirds of the way into a mouse's gestation period.26 Among the reasons, the team reported in the journal Cancer Cell, was an impaired ability to respond to and repair DNA damage.