How do you know the difference?
No true.
I raising 2 hearing children without problem because my both children learn both worlds since they were babies.
I sign with voice to my both children since they were babies. My both children sign like deafies and speak like hearing when they goes to hearing world.
A Childminder train my children with speech development twice a week until they are 3 years old and go to Kindergarten. They convinced the difference between both worlds when they join their first kindergarten when they were 3 years old.
My both children are now 13 and 10 years old... I consider them as my children, not their ears...
The children learn fast than adult.
Many deafies have no problem to rasing hearing children...