Forum:A question about At World's End (contains Spoiler)

Hello my fellow 'pirates',

I've seen the movie yesterday(since I live in Asia Pacific, so the releasing date is a day earlier than some of you), and I don't understand one thing. Davy Jones carved his heart out because of the pain he wouldn't withstand, but why should Will Turner also need to got his heart carved out? Well, although I know a quote: "The Dutchman needs a living heart, or there'll be no captain. And if there's no captain, there's no one to have the key." ―Wyvern to William Turner [src] But then the explanation of Davy Jones' act would be inlogical. What do you guys think, mate?