You can't teach an old dog new tricks.It's true that old people learn things not that easily compared to the youngsters. Consider my father who's old and never could learn computer as he had no interest at all whereas my kids who are so young and always try to learn new things on computer. Also at this age I am afraid of learning two wheeler driving whereas youngsters these days are always keen to learn it.
Its difficult for people learning new things at old age whereas learning things at small age is easy as kids are curious to learn things.
Do you also feel the same? Are curious to learn the things which you don't know at this age?.