During the 2018 Brett Kavanaugh hearings I reminded that formal oath-swearings are always accompanied by an open right hand. (And sometimes with the left hand on a Bible.) But you always swear with your fingers closed, not open. Open fingers are symbolic of insincerity or a lack of solemnity. Sir Thomas More: “When a man makes an oath, Meg, he’s holding himself in his own hands, like water. And if he opens his fingers then he needn’t hope to find himself again.”