how the hell does someone write a whole book in a month?

As many others are doing, right now, probably right this very second, I have accepted the challenge of NaNoWriMo.  You know the one, the crazy writing exercise that a few hundred thousand writers take on every November?  Write one book, 50 000 words, in 30 days.  Well, for the last 2 years I’ve watched November come … More how the hell does someone write a whole book in a month?