Sure it is! You know that, due to the sort of thing you're doing, you ought to try to be careful. But you make the decision not to. Think about driving. I can

Sure it is! You know that, due to the sort of thing you're doing, you ought to try to be careful. But you make the decision not to. Think about driving. I can easily imagine making the conscious decision to simply not drive very carefully--whether for fun, because there's an emergency, because I want to hurt people, etc. You might think of it as analogous to willful ignorance. You know that there is something you ought to know, but you make a decision to either not seek the knowledge out, or to insulate yourself from it.