"No," Ron answered for him, almost involuntarily. He doubted Harry's answer would be as categorical as it needed to be. "If we -" He shut his mouth for a moment, trying to pick out the best objection to involving Snape at all from the hundreds that were presenting themselves. They couldn't count on Snape for anything, not when it was this important. "He's at least as likely to tip off his Death Eater friends as he is the Order if he knows anything, don't you think? Sure, maybe he's helped us a couple of times, but there's a hell of a lot to balance it out. Don't you think ... it would be better to risk arguing with someone than to hope that git does the right thing for the - the third time in his life? And I'm being generous."