What Hawthorne cares about, and it comes up constantly throughout the book, is the inheritance that accompanies the Pyncheons and lead them down to a bitter path: "weakness, defects, dark passions, the tendency to do the evil and the moral weaknesses that lead to crime pass from one generation to another".
FAMILY would be considered a socializing agent. After all, you cannot socialize with a pet, a piece of paper, or colors.
Answer:
It is true that people with good eyesight fail to see what is right in front of them. This is probably because they try to focus on distant objects and often ignore the things that come in their view before them.