Just to add, when Lister introduced antiseptic methods he was met with strong resistance from those same doctors who were equal parts annoyed with the messenger

Just to add, when Lister introduced antiseptic methods he was met with strong resistance from those same doctors who were equal parts annoyed with the messenger, and the message. It’s a hard thing to realize that you’d be killing thousands of people in your ignorance after all. It took quite a long time for his methods to be widely accepted and put into practice. Even when understanding emerges, you have to watch out for the entrenched interests defending themselves against change.