The confidence scale serves as a guide for your conversation partner to get a sense of where they at and what's driving it. Try not to say like, well, i need to ask questions to get them to move up in their level of confidence that vaccines are safe. You another clue about if people give you a number, say a hundred, and thenn you clarify with them by asking, does that mean you could not be mistaken about it? It might open up an opportunity to ask how they would go about their lives if they were on the other side of things.