You can't teach an old dog new tricks." "Oh, that's not very true, Harry. That's an excellent argument for why it's not true , I believe." "Well, I 'm not really sure where you're getting your ideas from," he replied. "The argument you're making isn 't based on evidence, it's based on the 'feeling ' of the crowd around the argument." "That 's true," Snape said after a moment, "but that argument was based on feelings . You could argue that it 's not logical to think of a magical system as logical if we're not even aware that there's logic involved. We can't know what the mind really is , or what it 's capable of doing. The crowd around the discussion isn 't really telling us anything, it is just reacting to the 'feeling' of people around the argument.
