Just like to add that Jashkenas has updated the Todo example code that this article refers to (3 hrs ago at the time of this comment). The link in this article

Just like to add that Jashkenas has updated the Todo example code that this article refers to (3 hrs ago at the time of this comment). The link in this article in the first section "Models should not know about Views" should link instead to http://bit.ly/pfnFYu http://bit.ly/pfnFYu (gotten from the github history)