Old age kills people.
Often elderly people let themselves go and deteriorate as they revert to stereotype that old people are slow, decripit, forgetfull.
In the information chain old people are the weakest link.
Due to their deafness they do not hear the message and due to forgetfullness they forget to pass the information on.
A very famous experiment was carried out by the social scientist Ellen Langer in 1979.
A goup of old people were transported back in time to 1959 and were instructed to speak in the presence tense as if they were living in 1959.
The old people became 'younger'
Read the following links :
Aging in Reverse: the Counterclockwise Study | SuperConsciousness Magazine
Counterclockwise, by Ellen Langer | Let's Live Forever!
What do ye think ?