"Health and medicine is now an information technology," Mr. Kurzweil, an inventor and futurist, says. "And information that fits in my cell phone today will fit in a blood cell in few years."
Why stop at 100? →
"The estimate of 100 is absurd," Mr. Kurzweil says, explaining that it is based on the present state of medical knowledge, which is bound to advance "exponentially" in the century ahead.