deep meaning

Lady was travelling in a train with a 6 year kid... they both were reading books....

It seemed unbelievable to most of the fellow passengers.

Then one of them got up and asked...

"maam in today world the kids who are born yesterday play with smartphone  and this kid is  reading. How come he is not with playing phone or a tablet? How come he listens to you and how did you make him do that?"

To this the woman calmly replied "Sir, kids do not listen to us but they sure do copy us."

A small sentence... a deep meaning.