Did the reference book inspire Brody's last resort?
When Brody is reading the book on sharks, he looks at pictures of people swimming with sharks, some shark bite photos, and a picture of a shark chewing on an O2 tank. Did that, and Hooper's comment ("There are compressed air. You mess around with them, and they're gonna explode!") recur to Brody during the climactic sinking of the Orca, and inspire his strategy of jamming the tank in the shark's mouth and then shooting it?