“Are Liars Ethical?: On the Tension between Benevolence and Honesty,” the authors looks at deception a little differently than people have in the past. They look at deception that sometimes can be helpful to other people. They typically think about deception as selfish deception: I lie to gain some advantage at the expense of somebody else. And we typically think of honesty as something that might be costly to me, but helpful to others.
Is every lie a sin? See what the research says.