It was once controversial for Doctors to wash their hands. Now everyone believes and understands why it is necessary. But few of us have any real understandin

It was once controversial for Doctors to wash their hands. Now everyone believes and understands why it is necessary. But few of us have any real understanding of what bacteria and infections actually are. We just take it for granted. Sometimes our basic understanding of the world is insufficient to really grasp new ideas. It just takes a while for people to adapt and in the meantime the alternative theories become very powerful.