hour before they were inoculated, it was very possible that no one died of inoculation, although boylston himself admitted that six people died and it was possible at least a few of those contracted smallpox and then he inoculated them simultaneously and blamed the inoculation. it is possible. they had this great medical discovery and you can trace this discovery. i don't really tell the story because i really focus in on boston. may be one of you can ride it, about lady montagu practicing the same procedure in england and encountering much the same opposition. .. >> the deadliest in all of human history. it was a great effect. what i argue in the book in the covenant is that the attacks on the ministers, they are getting into the mud with their opponents. the vicious debate that raises in the streets. and in the public humans and pep -- pamphlets. the idea of the first puritans of the city on a hill, they are doing to bind themselves together and with god to form the perfect society, perfect church, be a model for the perform of england. it was simply torn apart. other events contributed