Crimes of Negligence: Attempting and Succeeding

In chapter 6 of Attempts, Gideon Yaffe defends the thesis that it is ??possible to attempt crimes of negligence?? (2010, p. 173). I am persuaded that he is right about this, provided that ??attempt crimes of negligence?? is read as (potentially misleading) shorthand for ??attempt to bring it about that we commit crimes of negligence.?? But I find certain parts of his defense unpersuasive. My discussion of those parts of his argument motivates the following thesis: Not only can one attempt to bring it about that one commits a crime of negligence, but the attempt can be successful as well.