In the book Our Town, what did Emily Webb learn in act III?

By the time
Emily learns what she learns about
life, as seen in Act III, she is dead. And that's part of the
point of what
she learns: there is no way to know about the life we live as we are living

it.

This part of the play, when Emily sees how much of her life she
had
missed while she is alive, is so sensitively and emotionally written that
any paraphrase here
would not serve you well. This will sum it up best
for...