Scientific Status
Prior to the nineteenth century, there was insufficient evidence either to demonstrate or to refute centenarian longevity. Even today, no fixed theoretical limit to human longevity is apparent. In Studies in the biodemography of human longevity indicate a late-life mortality deceleration law: that death rates level off at advanced ages to a late-life mortality plateau. That is, there is no fixed upper limit to human longevity, or fixed maximal human lifespan. This law was first quantified in 1939, when researchers found that the one-year probability of death at advanced age asymptotically approaches a limit of 44% for women and 54% for men.
Read more about this topic: Longevity Claims
Famous quotes containing the words scientific and/or status:
“The scientific mind is atrophied, and suffers under inherited cerebral weakness, when it comes in contact with the eternal woman—Astarte, Isis, Demeter, Aphrodite, and the last and greatest deity of all, the Virgin.”
—Henry Brooks Adams (1838–1918)
“[In early adolescence] she becomes acutely aware of herself as a being perceived by others, judged by others, though she herself is the harshest judge, quick to list her physical flaws, quick to undervalue and under-rate herself not only in terms of physical appearance but across a wide range of talents, capacities and even social status, whereas boys of the same age will cite their abilities, their talents and their social status pretty accurately.”
—Terri Apter (20th century)