What are the "benefits of failure" according to rowling? why do you think she discusses these?

According to Rowling, Failures:

Give an inner security that  had never attained by passing examinations. Teach things about ourselves that  could have learned no other way.

Let us discover weI had a strong will, and more discipline than  had suspected

She discusses these based on her own experiences.

cavern

explanation:

for the crossword

the correct answers are:

c. “never in the history of his people had a man married a woman who spoke a different tongue.”

d. “‘it has never been heard,’ was the verdict of an old man speaking a few weeks later.”

e. “this man had come with others to commiserate with okeke.”