 A related benefit of the basic approach is that, in the eyes of many practitioners, it solves the Gettier problem. Gettier cases follow a recipe. Start with a belief sufficiently justified to meet the justification condition for knowledge. Then add an element of bad luck that would normally prevent the justified belief from being true. Lastly add a dose of good luck that “cancels out the bad”, so the belief ends up true anyhow. It has proven difficult to explain why this “double luck” prevents knowledge (Zagzebski 1996).