Consider this- ability has nothing to do with chronological age. It has more to do with the age of the mind and body. Sometimes my 5 year old can do things my 8 year old can’t like blow bubbles or work the video. I would do him an injustice to expect him to do something because his younger sister does or because he is older. How often do we compare our children to others. How hard is it to accept them for who and what they are?