A blunt knife or rusted knife can't be useful for anything just for the sake we call it as the knife similar to PayTM series or Sachin or Virat records.
Of course when they are very young we should tell them what is good and what is bad. How to lead happy life. How to be good with people But as they come to a stage of understanding the life and when they can decide on their priorities parents should not enforce their view on them. Once the child comes to an age of sixteen or seventeen parents should behave with them like friends. So we should allow our children to grow into their intelligence rather than forcing them