Kim Ung-yong, former Korean child prodigy that could solve differential equations at the age of 4 and speak Korean, English, French, German and Japanese by 5 now has 2 kids and none of them are math prodigies

>Professor Kim Ung-yong said, "These days, schools don't do IQ tests," and he said that he did not know the children's IQs. "Kids don't seem to be interested in math and science," he said. "The older son likes sports and the younger one likes to dance."
(https://www.donga.com/news/Entertainment/article/all/20140929/66813613/2)

How do the IQ experts of /sci/ react to this?