if the average life of a person is taken as 100S the age of the universe on this scale is of the order
Answers
Answered by
0
For most of human history, the average human life span wasn't great. But we've made some extraordinary leaps lately that make an average span of 100 seem less like science fiction and more like an inevitability: A little more than a century ago in the United States, the average life expectancy was 49.24. In 2012 it was 78.8, a record high [source: Arias].
If our biology fixes a maximum life span for humans, we haven't hit it. But most of our progress hasn't resulted from adults' improved behavior or even medical advances. While many of us assume life expectancies were so much shorter before the 20th century because everyone was running around hitting one another with axes and contracting tuberculosis, the truth is life expectancy dramatically increases if you make childhood less dangerous. We've done a good job of that.
If our biology fixes a maximum life span for humans, we haven't hit it. But most of our progress hasn't resulted from adults' improved behavior or even medical advances. While many of us assume life expectancies were so much shorter before the 20th century because everyone was running around hitting one another with axes and contracting tuberculosis, the truth is life expectancy dramatically increases if you make childhood less dangerous. We've done a good job of that.
Similar questions