Want a quick-and-dirty measure of a book’s quality? Open it to page 69 and see what you find. (Another variation is the page 99 rule but, come on.)
I like how John Freeman at the National Book Critics’ Circle blog puts it:
So that’s what I began doing from time to time when the first page of a galley sunk into that logey, comfortable, throat-clearing prologue rhythm — I’d flip to page 99 and see what I found.
Note to self: Never write anything “logey.”