clipped from: www.boloji.com   
The other day, you told me on the phone that as you are elder to me, so you have more experience of life...may be it holds true in your case, also for my parents and even your parents...but that set me thinking...does Age always predetermine one's Experience ?

And I found myself saying: No

May be, that little homeless boy on the street has gathered more experience than children like Sunny and Shoma who are given a sheltered life by us...

May be that rag-picker woman who has to struggle daily to make both ends meet and live with dignity in a man's world, even though she may be years younger to me, life may have taught her much more because of her harsh experiences...

May be that street-hawker, or that riksha-wallah, or that beggar, even though they may be years younger to us...yet life has added years to their life...for they learned it the hard way...

So Mental Age is always independent of Chronological Age.