That's a lot of pressure on a single talk.
Cain tells us that she experienced a "grand mixture of excitement and terror" in the months before her talk, although she only wrote it a week in advance because she was on a year-long press tour for her book, Quiet. Even 24 hours before walking on stage, she was tweaking and re-memorizing portions of her speech. See what she has to say about giving the talk of a lifetime:
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