Pffft!
My family has several brilliant young people in it.
I have one niece who's IQ is so high they had trouble measuring it. Another niece just passed the exams to be an RN (yesterday) and my nephew who had a 4.0 GPA just started training to repair jet engines.
Not bad at all.
But um... I do have quite a few more nieces and nephews who were... um... not mentioned for a reason...
I don't have kids of my own. (this is a good thing for the gene pool)
...And keep in mind, they would have edited out the brilliant answers. They were proving a point.