Corrected entry: When Walter Sparrow 'reads' the secret message from the book, he tells his son that he got the message by circling every 23rd word of every 23rd page, but you see him circling more than one word on a page. Then, when he calls his son to read the message out loud, it shows him reading this from one page only, so the message is not scattered throughout the book. (01:08:30)
Phixius
29th Oct 2011
Correction: "Every 23rd word" means he counts from the first word to 23, then from there to 23 again, repeating until he's out of words for that page. Just like "every 23rd page" is counted; he doesn't just circle one word on the 23rd page of the book. As for the other, margins make excellent places to write notes in a book. So there's no reason his son could not have read the message from a single page.
Phixius ★