A recent survey report announced in the United States stated that after selecting a large number of research subjects for comparative experiments, it was found that the number of outstanding people in celebrity families was 23 times the number of outstanding people in ordinary people's families. 
The performance of outstanding talents in ordinary families is different from that in the celebrity family, and it needs another rule to measure.
 we can draw a highly reliable conclusion that a person's quality is mainly determined by heredity.